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C#精髓第四讲 GridView 72般绝技

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C#精髓第四讲 GridView 72般绝技
作者：清清月儿
主页：http://blog.csdn.net/21aspnet/ 时间：2007.3.24-26
为了写本文，又搭工又搭料，累的2天2宿没睡觉，这篇文章实在是耗费我太多的心血，版权永远属于CSDN社区的清清月儿，请不要试图修改本文，破坏全文的完整性，希望您尊重我的劳动成果！
快速预览：
GridView无代码分页排序
GridView选中，编辑，取消，删除
GridView正反双向排序
GridView和下拉菜单DropDownList结合
GridView和CheckBox结合
鼠标移到GridView某一行时改变该行的背景色方法一
鼠标移到GridView某一行时改变该行的背景色方法二
GridView实现删除时弹出确认对话框
GridView实现自动编号
GridView实现自定义时间货币等字符串格式
GridView实现用“...”代替超长字符串
GridView一般换行与强制换行
GridView显示隐藏某一列
GridView弹出新页面/弹出新窗口
GridView固定表头(不用javascript只用CSS，2行代码，很好用)
GridView合并表头多重表头无错完美版（以合并3列3行举例）
GridView突出显示某一单元格（例如金额低于多少，分数不及格等）
GridView加入自动求和求平均值小计
GridView数据导入Excel/Excel数据读入GridView
1.GridView无代码分页排序：
效果图：

1.AllowSorting设为True，aspx代码中是AllowSorting="True"；
2.默认1页10条，如果要修改每页条数，修改PageSize即可，在aspx代码中是PageSize="12"。
3.默认的是单向排序的，右击GridView弹出“属性”，选择AllowSorting为True即可。
2.GridView选中，编辑，取消，删除：
效果图：

后台代码：
你可以使用sqlhelper,本文没用。代码如下：

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page

...{

//清清月儿http://blog.csdn.net/21aspnet

SqlConnection sqlcon;

SqlCommand sqlcom;

string strCon = "Data Source=(local);Database=数据库名;Uid=帐号;Pwd=密码";

protected void Page_Load(object sender, EventArgs e)

...{

if (!IsPostBack)

...{

bind();

}

}

protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

...{

GridView1.EditIndex = e.NewEditIndex;

bind();

}

//删除

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)

...{

string sqlstr = "delete from 表 where id='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

sqlcon = new SqlConnection(strCon);

sqlcom = new SqlCommand(sqlstr,sqlcon);

sqlcon.Open();

sqlcom.ExecuteNonQuery();

sqlcon.Close();

bind();

}

//更新

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

...{

sqlcon = new SqlConnection(strCon);

string sqlstr = "update 表 set 字段1='"

+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',字段2='"

+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "',字段3='"

+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where id='"

+ GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

sqlcom=new SqlCommand(sqlstr,sqlcon);

sqlcon.Open();

sqlcom.ExecuteNonQuery();

sqlcon.Close();

GridView1.EditIndex = -1;

bind();

}

//取消

protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

...{

GridView1.EditIndex = -1;

bind();

}

//绑定

public void bind()

...{

string sqlstr = "select * from 表";

sqlcon = new SqlConnection(strCon);

SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

DataSet myds = new DataSet();

sqlcon.Open();

myda.Fill(myds, "表");

GridView1.DataSource = myds;

GridView1.DataKeyNames = new string[] ...{ "id" };//主键

GridView1.DataBind();

sqlcon.Close();

}

}

前台主要代码：

... ...

ForeColor="#333333" GridLines="None" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"

OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit">

<asp:BoundField DataField="身份证号码" HeaderText="用户ID" ReadOnly="True" />

<asp:BoundField DataField="姓名" HeaderText="用户姓名" />

<asp:BoundField DataField="员工性别" HeaderText="性别" />

<asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />

<asp:CommandField HeaderText="选择" ShowSelectButton="True" />

<asp:CommandField HeaderText="编辑" ShowEditButton="True" />

<asp:CommandField HeaderText="删除" ShowDeleteButton="True" />

</Columns>

</asp:GridView>

3.GridView正反双向排序：
效果图：点姓名各2次的排序，点其他也一样可以。

后台代码：

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

public partial class Default3 : System.Web.UI.Page

...{

//清清月儿的博客http://blog.csdn.net/21aspnet

SqlConnection sqlcon;

string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=";

protected void Page_Load(object sender, EventArgs e)

...{

if (!IsPostBack)

...{

ViewState["SortOrder"] = "身份证号码";

ViewState["OrderDire"] = "ASC";

bind();

}

}

protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)

...{

string sPage = e.SortExpression;

if (ViewState["SortOrder"].ToString() == sPage)

...{

if (ViewState["OrderDire"].ToString() == "Desc")

ViewState["OrderDire"] = "ASC";

else

ViewState["OrderDire"] = "Desc";

}

else

...{

ViewState["SortOrder"] = e.SortExpression;

}

bind();

}

public void bind()

...{

string sqlstr = "select top 5 * from 飞狐工作室";

sqlcon = new SqlConnection(strCon);

SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

DataSet myds = new DataSet();

sqlcon.Open();

myda.Fill(myds, "飞狐工作室");

DataView view = myds.Tables["飞狐工作室"].DefaultView;

string sort = (string)ViewState["SortOrder"] + " " + (string)ViewState["OrderDire"];

view.Sort = sort;

GridView1.DataSource = view;

GridView1.DataBind();

sqlcon.Close();

}

}

前台主要代码：

CellPadding="3" Font-Size="9pt" OnSorting="GridView1_Sorting" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">

<asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" />

<asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/>

<asp:BoundField DataField="员工性别" HeaderText="性别" SortExpression="员工性别"/>

<asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>

</Columns>

</asp:GridView>

4.GridView和下拉菜单DropDownList结合：
效果图：

后台代码：

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

public partial class Default4 : System.Web.UI.Page

...{

SqlConnection sqlcon;

string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";

protected void Page_Load(object sender, EventArgs e)

...{

DropDownList ddl;

if (!IsPostBack)

...{

string sqlstr = "select top 5 * from 飞狐工作室";

sqlcon = new SqlConnection(strCon);

SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

DataSet myds = new DataSet();

sqlcon.Open();

myda.Fill(myds, "飞狐工作室");

GridView1.DataSource = myds;

GridView1.DataBind();

for (int i = 0; i <= GridView1.Rows.Count - 1; i++) <br > ...{

DataRowView mydrv = myds.Tables["飞狐工作室"].DefaultView[i];

if (Convert.ToString(mydrv["员工性别"]).Trim() == "True")

...{

ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1");

ddl.SelectedIndex = 0;

}

if (Convert.ToString(mydrv["员工性别"]).Trim() == "False")

...{

ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1");

ddl.SelectedIndex = 1;

}

}

sqlcon.Close();

}

}

public SqlDataReader ddlbind()

...{

string sqlstr = "select distinct 员工性别 from 飞狐工作室";

sqlcon = new SqlConnection(strCon);

SqlCommand sqlcom = new SqlCommand(sqlstr, sqlcon);

sqlcon.Open();

return sqlcom.ExecuteReader();

}

前台主要代码：

CellPadding="3" Font-Size="9pt" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">

<asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" />

<asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/>

<asp:TemplateField HeaderText="员工性别">

<asp:DropDownList ID="DropDownList1" runat="server" DataSource='<%# ddlbind()%>' DataValueField="员工性别" DataTextField="员工性别">

</asp:DropDownList>

</ItemTemplate>

</asp:TemplateField>

<asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>

</Columns>

</asp:GridView>

5.GridView和CheckBox结合：
效果图：

后台代码：

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

public partial class Default5 : System.Web.UI.Page

...{

SqlConnection sqlcon;

string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";

protected void Page_Load(object sender, EventArgs e)

...{

if (!IsPostBack)

...{

bind();

}

}

protected void CheckBox2_CheckedChanged(object sender, EventArgs e)

...{

for (int i = 0; i <= GridView1.Rows.Count - 1; i++) <br > ...{

CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");

if (CheckBox2.Checked == true)

...{

cbox.Checked = true;

}

else

...{

cbox.Checked = false;

}

}

}

protected void Button2_Click(object sender, EventArgs e)

...{

sqlcon = new SqlConnection(strCon);

SqlCommand sqlcom;

for (int i = 0; i <= GridView1.Rows.Count - 1; i++)

...{

CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");

if (cbox.Checked == true)

...{

string sqlstr = "delete from 飞狐工作室 where 身份证号码='" + GridView1.DataKeys[i].Value + "'";

sqlcom = new SqlCommand(sqlstr, sqlcon);

sqlcon.Open();

sqlcom.ExecuteNonQuery();

sqlcon.Close();

}

}

bind();

}

protected void Button1_Click(object sender, EventArgs e)

...{

CheckBox2.Checked = false;

for (int i = 0; i <= GridView1.Rows.Count - 1; i++)

...{

CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");

cbox.Checked = false;

}

}

public void bind()

...{

string sqlstr = "select top 5 * from 飞狐工作室";

sqlcon = new SqlConnection(strCon);

SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

DataSet myds = new DataSet();

sqlcon.Open();

myda.Fill(myds, "tb_Member");

GridView1.DataSource = myds;

GridView1.DataKeyNames = new string[] ...{ "身份证号码" };

GridView1.DataBind();

sqlcon.Close();

}

}

前台主要代码：

CellPadding="3" Font-Size="9pt" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">

<asp:TemplateField>

<asp:CheckBox ID="CheckBox1" runat="server" />

</ItemTemplate>

</asp:TemplateField>

<asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" />

<asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/>

<asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>

</Columns>

</asp:GridView>

Text="全选" />

<asp:Button ID="Button1" runat="server" Font-Size="9pt" Text="取消" OnClick="Button1_Click" />

<asp:Button ID="Button2" runat="server" Font-Size="9pt" Text="删除" OnClick="Button2_Click" />

6.鼠标移到GridView某一行时改变该行的背景色方法一：
效果图：

做法：
双击GridView的OnRowDataBound事件；
在后台的GridView1_RowDataBound()方法添加代码，最后代码如下所示：

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

...{

int i;

//执行循环，保证每条数据都可以更新

for (i = 0; i ...{

//首先判断是否是数据行

if (e.Row.RowType == DataControlRowType.DataRow)

...{

//当鼠标停留时更改背景色

e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'");

//当鼠标移开时还原背景色

e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c");

}

}

}

前台代码：

<title>实现鼠标划过改变GridView的行背景色清清月儿http://blog.csdn.net/21aspnet </title>

</head>

<body>

<div>

DataSourceID="SqlDataSource1" AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">

<asp:BoundField DataField="身份证号码" HeaderText="身份证号码" ReadOnly="True" SortExpression="身份证号码" />

<asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名" />

<asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址" />

<asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />

</Columns>

</asp:GridView>

<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:北风贸易ConnectionString1 %>"

SelectCommand="SELECT top 5 [身份证号码], [姓名], [员工性别], [家庭住址], [邮政编码] FROM [飞狐工作室]" DataSourceMode="DataReader"></asp:SqlDataSource>

</div>

</form>

</body>

</html>

7.鼠标移到GridView某一行时改变该行的背景色方法二：
效果图：

做法：和上面的一样就是代码不同

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

...{

//int i;

/**/////执行循环，保证每条数据都可以更新

//for (i = 0; i //{

// //首先判断是否是数据行

// if (e.Row.RowType == DataControlRowType.DataRow)

// {

// //当鼠标停留时更改背景色

// e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'");

// //当鼠标移开时还原背景色

// e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c");

// }

//}

//如果是绑定数据行

if (e.Row.RowType == DataControlRowType.DataRow)

...{

//鼠标经过时，行背景色变

e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'");

//鼠标移出时，行背景色变

e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");

}

8.GridView实现删除时弹出确认对话框：
效果图：

实现方法：
双击GridView的OnRowDataBound事件；
在后台的GridView1_RowDataBound()方法添加代码，最后代码如下所示：

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

...{

//如果是绑定数据行

if (e.Row.RowType == DataControlRowType.DataRow)

...{

if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)

...{

((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除："" + e.Row.Cells[1].Text + ""吗?')");

}

9.GridView实现自动编号：
效果图：

实现方法：
双击GridView的OnRowDataBound事件；
在后台的GridView1_RowDataBound()方法添加代码，最后代码如下所示：

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

...{

//如果是绑定数据行

if (e.Row.RowType == DataControlRowType.DataRow)

...{

/**/////鼠标经过时，行背景色变

//e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'");

/**/////鼠标移出时，行背景色变

//e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");

/**/////当有编辑列时，避免出错，要加的RowState判断

//if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)

//{

// ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除："" + e.Row.Cells[1].Text + ""吗?')");

//}

}

if (e.Row.RowIndex != -1)

...{

int id = e.Row.RowIndex + 1;

e.Row.Cells[0].Text = id.ToString();

}

注意这时最好把前台的第一列的表头该为“编号”，因为以前的第一列被“吃掉”了。

OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">

<asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />

<asp:BoundField DataField="姓名" HeaderText="用户姓名" />

<asp:BoundField DataField="员工性别" HeaderText="性别" />

<asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />

<asp:CommandField HeaderText="选择" ShowSelectButton="True" />

<asp:CommandField HeaderText="编辑" ShowEditButton="True" />

<asp:CommandField HeaderText="删除" ShowDeleteButton="True" />

</Columns>

</asp:GridView>

10.GridView实现自定义时间货币等字符串格式：
效果图：
图1-未格式化前

图2-格式化后

解决方法：
在asp.net 2.0中，如果要在绑定列中显示比如日期格式等，如果用下面的方法是显示不了的
DataFormatString="{0:M-dd-yyyy}"
HeaderText="CreationDate" />
主要是由于htmlencode属性默认设置为true,已防止XSS攻击，安全起见而用的，所以，可以有以下两种方法解决
1、

DataFormatString="{0:M-dd-yyyy}"

HtmlEncode="false"

HeaderText="CreationDate" />

</columns>

</asp>

将htmlencode设置为false即可
另外的解决方法为，使用模版列

<asp :GridView ID="GridView3" runat="server" >

<columns>

<asp :TemplateField HeaderText="CreationDate" >

<edititemtemplate>

Text='<%...# Eval("CreationDate", "{0:M-dd-yyyy}") %>'>

</asp>

</edititemtemplate>

<itemtemplate>

Text=’<%...# Bind("CreationDate", "{0:M-dd-yyyy}") %>'>

</asp>

</itemtemplate>

</asp>

</columns>

</asp>

<-- 前台代码： -->

DataSourceID="SqlDataSource1" AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">

<Columns>

<asp:BoundField DataField="身份证号码" HeaderText="身份证号码" ReadOnly="True" SortExpression="身份证号码" />

<asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名" />

<asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />

<asp:BoundField DataField="出生日期" HeaderText="出生日期" SortExpression="出生日期" />

<asp:BoundField DataField="起薪" HeaderText="起薪" SortExpression="起薪" />

</Columns>

<FooterStyle BackColor="White" ForeColor="#000066" />

<RowStyle ForeColor="#000066" />

<SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

<PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />

<HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />

</asp:GridView>

<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:北风贸易ConnectionString1 %>"

SelectCommand="SELECT top 5 [出生日期], [起薪], [身份证号码], [姓名], [家庭住址], [邮政编码] FROM [飞狐工作室]" DataSourceMode="DataReader"></asp:SqlDataSource>

附录-常用格式化公式：
{0:C} 货币；
{0:D4}由0填充的4个字符宽的字段中显示整数；
{0:000.0}四舍五入小数点保留第几位有效数字；
{0:N2}小数点保留2位有效数字；{0:N2}% 小数点保留2位有效数字加百分号；
{0:D}长日期；{0:d}短日期；{0:yy-MM-dd} 例如07-3-25；；{0:yyyy-MM-dd} 例如2007-3-25
11.GridView实现用“...”代替超长字符串：
效果图：

解决方法：数据绑定后过滤每一行即可
调用的方法：

public string SubStr(string sString, int nLeng)

...{

if (sString.Length <= nLeng)

...{

return sString;

}

string sNewStr = sString.Substring(0, nLeng);

sNewStr = sNewStr + "...";

return sNewStr;

}

//后台全部代码：

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page

...{

SqlConnection sqlcon;

SqlCommand sqlcom;

string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";

protected void Page_Load(object sender, EventArgs e)

...{

if (!IsPostBack)

...{

ViewState["SortOrder"] = "身份证号码";

ViewState["OrderDire"] = "ASC";

bind();

}

protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

...{

GridView1.EditIndex = e.NewEditIndex;

bind();

}

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)

...{

string sqlstr = "delete from 飞狐工作室 where 身份证号码='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

sqlcon = new SqlConnection(strCon);

sqlcom = new SqlCommand(sqlstr,sqlcon);

sqlcon.Open();

sqlcom.ExecuteNonQuery();

sqlcon.Close();

bind();

}

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

...{

sqlcon = new SqlConnection(strCon);

string sqlstr = "update 飞狐工作室 set 姓名='"

+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"

+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='"

+ GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

sqlcom=new SqlCommand(sqlstr,sqlcon);

sqlcon.Open();

sqlcom.ExecuteNonQuery();

sqlcon.Close();

GridView1.EditIndex = -1;

bind();

}

protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

...{

GridView1.EditIndex = -1;

bind();

}

public void bind()

...{

string sqlstr = "select top 5 * from 飞狐工作室";

sqlcon = new SqlConnection(strCon);

SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

DataSet myds = new DataSet();

sqlcon.Open();

myda.Fill(myds, "飞狐工作室");

GridView1.DataSource = myds;

GridView1.DataKeyNames = new string[] ...{ "身份证号码" };

GridView1.DataBind();

for (int i = 0; i <= GridView1.Rows.Count - 1; i++)

...{

DataRowView mydrv;

string gIntro;

if (GridView1.PageIndex == 0)

...{

mydrv = myds.Tables["飞狐工作室"].DefaultView[i];

gIntro = Convert.ToString(mydrv["家庭住址"]);

GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);

}

else

...{

mydrv = myds.Tables["飞狐工作室"].DefaultView[i + (5 * GridView1.PageIndex)];

gIntro = Convert.ToString(mydrv["家庭住址"]);

GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);

}

sqlcon.Close();

}

public string SubStr(string sString, int nLeng)

...{

if (sString.Length <= nLeng)

...{

return sString;

}

string sNewStr = sString.Substring(0, nLeng);

sNewStr = sNewStr + "...";

return sNewStr;

}

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

...{

//如果是绑定数据行

if (e.Row.RowType == DataControlRowType.DataRow)

...{

/**/////鼠标经过时，行背景色变

//e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'");

/**/////鼠标移出时，行背景色变

//e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");

/**/////当有编辑列时，避免出错，要加的RowState判断

//if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)

//{

// ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除："" + e.Row.Cells[1].Text + ""吗?')");

//}

}

if (e.Row.RowIndex != -1)

...{

int id = e.Row.RowIndex + 1;

e.Row.Cells[0].Text = id.ToString();

}

11.GridView一般换行与强制换行：
效果图：

首先设置 gridview里有一列绑定的数据很长，显示的时候在一行里面显示，页面拉得很宽。
原因是连续英文段为一个整体导致的，在RowDataBound中添加上了一句e.Row.Cells[2].Style.Add("word-break", "break-all")就可以。
如果要给所有的列增加此属性：
protected void Page_Load(object sender, EventArgs e)
{
//正常换行
GridView1.Attributes.Add("style", "word-break:keep-all;word-wrap:normal");
//下面这行是自动换行
GridView1.Attributes.Add("style", "word-break:break-all;word-wrap:break-word");
if (!IsPostBack)
{
bind();//调用数据绑定即可
}
}
总之：善用CSS的word-break:break-all;word-wrap:break-word属性即可，这个属性是通用的对于顽固的南换行问题都可以解决，不局限于GridView。
12.GridView显示隐藏某一列：
本方案为月儿独创，不同于网上其他方式，我觉得用一个CheckBox更人性化，这样可以隐藏不必要的列，让用户自己选择需要出现的列，在处理多列时这是一个很好的解决方案！
效果图：
图1-开始

图2-点击显示的CheckBox后

解决方案：
public void bind()
{
string sqlstr = "select top 5 * from 飞狐工作室";
sqlcon = new SqlConnection(strCon);
SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
DataSet myds = new DataSet();
sqlcon.Open();
myda.Fill(myds, "飞狐工作室");
GridView1.DataSource = myds;
GridView1.DataKeyNames = new string[] { "身份证号码" };
GridView1.DataBind();
sqlcon.Close();
GridView1.Columns[3].Visible = false;//一开始隐藏
CheckBox1.Checked = false;//如果不这样后面的代码会把他True
}
双击CheckBox1，在CheckedChanged方法里写上代码，最后代码如下：
protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
{
GridView1.Columns[3].Visible=! GridView1.Columns[3].Visible;
Response.Write("GridView1的第4列现在的显示隐藏状态是："+GridView1.Columns[3].Visible.ToString());
}
注意：CheckBox1的AutoPostBack要True！
后台全部代码如下：

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page

...{

SqlConnection sqlcon;

SqlCommand sqlcom;

string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";

protected void Page_Load(object sender, EventArgs e)

...{

if (!IsPostBack)

...{

ViewState["SortOrder"] = "身份证号码";

ViewState["OrderDire"] = "ASC";

bind();

}

}

protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

...{

GridView1.EditIndex = e.NewEditIndex;

bind();

}

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)

...{

string sqlstr = "delete from 飞狐工作室 where 身份证号码='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

sqlcon = new SqlConnection(strCon);

sqlcom = new SqlCommand(sqlstr,sqlcon);

sqlcon.Open();

sqlcom.ExecuteNonQuery();

sqlcon.Close();

bind();

}

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

...{

sqlcon = new SqlConnection(strCon);

string sqlstr = "update 飞狐工作室 set 姓名='"

+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"

+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='"

+ GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

sqlcom=new SqlCommand(sqlstr,sqlcon);

sqlcon.Open();

sqlcom.ExecuteNonQuery();

sqlcon.Close();

GridView1.EditIndex = -1;

bind();

}

protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

...{

GridView1.EditIndex = -1;

bind();

}

public void bind()

...{

string sqlstr = "select top 5 * from 飞狐工作室";

sqlcon = new SqlConnection(strCon);

SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

DataSet myds = new DataSet();

sqlcon.Open();

myda.Fill(myds, "飞狐工作室");

GridView1.DataSource = myds;

GridView1.DataKeyNames = new string[] ...{ "身份证号码" };

GridView1.DataBind();

sqlcon.Close();

GridView1.Columns[3].Visible = false;

CheckBox1.Checked = false;

}

protected void CheckBox1_CheckedChanged(object sender, EventArgs e)

...{

GridView1.Columns[3].Visible=! GridView1.Columns[3].Visible;

Response.Write("GridView1的第4列现在的显示隐藏状态是："+GridView1.Columns[3].Visible.ToString());

}

}

前台代码：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<title>GridView显示隐藏列清清月儿http://blog.csdn.net/21aspnet </title>

</head>

<div>

OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" >

<asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />

<asp:BoundField DataField="姓名" HeaderText="用户姓名" />

<asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />

<asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />

<asp:CommandField HeaderText="选择" ShowSelectButton="True" />

<asp:CommandField HeaderText="编辑" ShowEditButton="True" />

<asp:CommandField HeaderText="删除" ShowDeleteButton="True" />

</Columns>

</asp:GridView>

OnCheckedChanged="CheckBox1_CheckedChanged" Text="显示隐藏家庭住址" /></div>

</form>

</body>

</html>

13.GridView弹出新页面/弹出制定大小位置新窗口：
效果图：

方案一：简单的方法，新窗口不固定大小
OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" >
<FooterStyle BackColor="White" ForeColor="#000066" />
<Columns>
<asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
<asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />
<asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />
[b]DataNavigateUrlFields="姓名" DataNavigateUrlFormatString="Default6.aspx?GoodsID={0}" Target="mainframe" NavigateUrl="~/Default6.aspx" DataTextField="姓名" >
</asp:HyperLinkField>
<asp:CommandField HeaderText="选择" ShowSelectButton="True" />
<asp:CommandField HeaderText="编辑" ShowEditButton="True" />
<asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
</Columns>
<RowStyle ForeColor="#000066" />
<SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
<HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
</asp:GridView>
DataNavigateUrlFields是链接的字段名，DataNavigateUrlFormatString是路径。
方案二：精确控制弹出窗口大小位置
DataTextField="LastName" HeaderText="LastName"></asp:HyperLinkColumn>
使用的是结合javascript的window.open方法，关于window.open的参数网上有很多帖子，本站也有许多参考
弹出窗口大全http://blog.csdn.net/21aspnet/archive/2004/10/25/150231.aspx 即可！
14.GridView固定表头(不用javascript只用CSS!，很好用)：
效果图：

代码：
[/b]

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<title>GridView固定表头清清月儿http://blog.csdn.net/21aspnet </title>

<style>...

.Freezing

{...}{

position:relative ;

table-layout:fixed;

top:expression(this.offsetParent.scrollTop);

z-index: 10;

}

.Freezing th{...}{text-overflow:ellipsis;overflow:hidden;white-space: nowrap;padding:2px;}

</style>

</head>

<asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />

<asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />

<asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />

<asp:BoundField DataField="姓名" HeaderText="姓名" />

</Columns>

</asp:GridView>

</div>

</form>

</body>

</html>

用法：CSS设如上的样式，HeaderStyle加CssClass="Freezing，套住GridView的Div设置高度宽度 <div style="overflow-y: scroll; height: 200px;width:200px" >
15.GridView合并表头多重表头无错完美版（以合并3列3行举例）
效果图：

后台代码：

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

using System.Drawing;

public partial class _Default : System.Web.UI.Page

...{

SqlConnection sqlcon;

SqlCommand sqlcom;

string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";

protected void Page_Load(object sender, EventArgs e)

...{

if (!IsPostBack)

...{

bind();

}

protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

...{

GridView1.EditIndex = e.NewEditIndex;

bind();

}

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

...{

sqlcon = new SqlConnection(strCon);

string sqlstr = "update 飞狐工作室 set 姓名='"

+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"

+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='"

+ GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

sqlcom=new SqlCommand(sqlstr,sqlcon);

sqlcon.Open();

sqlcom.ExecuteNonQuery();

sqlcon.Close();

GridView1.EditIndex = -1;

bind();

}

protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

...{

GridView1.EditIndex = -1;

bind();

}

public void bind()

...{

string sqlstr = "select top 10 * from 飞狐工作室";

sqlcon = new SqlConnection(strCon);

SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

DataSet myds = new DataSet();

sqlcon.Open();

myda.Fill(myds, "飞狐工作室");

GridView1.DataSource = myds;

GridView1.DataKeyNames = new string[] ...{ "身份证号码" };

GridView1.DataBind();

sqlcon.Close();

}

//这里就是解决方案

protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)

...{

switch (e.Row.RowType)

...{

case DataControlRowType.Header:

//第一行表头

TableCellCollection tcHeader = e.Row.Cells;

tcHeader.Clear();