实验2 -DataList 增删改查等操作

具体效果如下所示:

使用Datalist显示数据，

新增数据，

修改

删除数据等操作

主要设置下面两个属性修改显示的外观。



6：在编辑模板列中，寻找事件选项，生成相关事件。并注意拖入的按钮的CommandName要改为delete，update，cancel等。




全例

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 xin : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

Page.ti

if (!Page.IsPostBack)

{

Bind();

}

}

/// <summary>

/// 数据绑定

/// </summary>

public void Bind()

{

string strCon = "server=.;database=studentTable;pwd=123;user id=sa";

SqlConnection con = new SqlConnection(strCon);

con.Open();

string strSql = "select * from stuinfo";

SqlDataAdapter da = new SqlDataAdapter(strSql, con);

DataSet ds = new DataSet();

da.Fill(ds);

PagedDataSource ps = new PagedDataSource();

ps.AllowPaging = true;

ps.DataSource = ds.Tables[0].DefaultView;

int curpage ;

if (Request.QueryString["page"] != null)

{

curpage = Convert.ToInt32(Request.QueryString["page"]);

}

else

{

curpage = 1;

}

ps.CurrentPageIndex = curpage - 1;

ps.PageSize = 2;

int count = ds.Tables[0].DefaultView.Count / ps.PageSize;

if (ds.Tables[0].DefaultView.Count % ps.PageSize != 0)

{

count++;

}

this.Label5.Text = "当前页：" + curpage.ToString() + " 共" + count.ToString() + "页";

this.HyperLink3.NavigateUrl = Request.CurrentExecutionFilePath;

if (!ps.IsFirstPage)

{

this.HyperLink1.NavigateUrl = Request.CurrentExecutionFilePath + "?page=" + (curpage - 1);

}

if (!ps.IsLastPage)

{

this.HyperLink2.NavigateUrl = Request.CurrentExecutionFilePath + "?page=" + (curpage + 1);

}

this.HyperLink4.NavigateUrl = Request.CurrentExecutionFilePath + "?page=" +count;

this.DataList1.DataSource = ps;

this.DataList1.DataBind();

con.Close();

}

/// <summary>

/// 编辑

/// </summary>

/// <param name="source"></param>

/// <param name="e"></param>

protected void DataList1_EditCommand(object source, DataListCommandEventArgs e)

{

this.DataList1.EditItemIndex = e.Item.ItemIndex;

Bind();

}

/// <summary>

/// 取消

/// </summary>

/// <param name="source"></param>

/// <param name="e"></param>

protected void DataList1_CancelCommand(object source, DataListCommandEventArgs e)

{

this.DataList1.EditItemIndex = -1;

}

/// <summary>

/// 更新

/// </summary>

/// <param name="source"></param>

/// <param name="e"></param>

protected void DataList1_UpdateCommand(object source, DataListCommandEventArgs e)

{

string strName = ((TextBox)this.DataList1.Items[e.Item.ItemIndex].FindControl("TextBox2")).Text.ToString();

string strSq = "update stuinfo set name ='"+strName+"' where id= "+this.DataList1.DataKeys[e.Item.ItemIndex].ToString()+"";

string strCon = "server=.;database=studentTable;pwd=123;user id=sa";

SqlConnection con = new SqlConnection(strCon);

con.Open();

SqlCommand com = new SqlCommand(strSq,con);

com.ExecuteNonQuery();

this.DataList1.EditItemIndex = -1;

con.Close();

Bind();

}

/// <summary>

/// 删除后绑定

/// </summary>

/// <param name="source"></param>

/// <param name="e"></param>

protected void DataList1_DeleteCommand(object source, DataListCommandEventArgs e)

{

string strSq = "delete stuinfo where id= " + this.DataList1.DataKeys[e.Item.ItemIndex].ToString() + "";

string strCon = "server=.;database=studentTable;pwd=123;user id=sa";

SqlConnection con = new SqlConnection(strCon);

con.Open();

SqlCommand com = new SqlCommand(strSq, con);

com.ExecuteNonQuery();

con.Close();

Bind();

}

protected void DataList1_ItemDataBound(object sender, DataListItemEventArgs e)

{

if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)

{

e.Item.Attributes.Add("onmouseover", "c=this.stle.backgroundColor,this.style.backgroundColor='#223344'");

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

(( Button)e.Item.FindControl("Button4")).Attributes.Add("onclick","return confirm('是否删除')");

}

}

protected void Button1_Click(object sender, EventArgs e)

{

string str = "1/" + this.FileUpload1.FileName;

string strPath = Server.MapPath( str);

FileUpload1.PostedFile.SaveAs(strPath);

string strSq = "insert into stuinfo(name,sex,age,pwd,image)";

strSq += "values('"+this.TextBox1.Text+"',"+this.RadioButtonList1.SelectedIndex+",'"+this.TextBox3.Text+"','"+this.TextBox4.Text+"','"+str+"') ";

string strCon = "server=.;database=studentTable;pwd=123;user id=sa";

SqlConnection con = new SqlConnection(strCon);

con.Open();

SqlCommand com = new SqlCommand(strSq, con);

com.ExecuteNonQuery();

con.Close();

Bind();

}

}