GridView 批量删除,自定义分页,定位页码

效果图:



前台代码：

<table width="100%" height="20" border="1" align="center" cellpadding="0" cellspacing="0"

bordercolorlight="#FFFFFF" bordercolordark="#E6E6E6" bgcolor="#FFFFFF">

<tr bgcolor="#FFFFFF">

<td width="7%" align="center">

<asp:CheckBox ID="cbAll" runat="server" AutoPostBack="True"

/></td>

<td width="8%" align="center"><img src="images/bz.gif" width="6" height="11"></td>

<td width="9%" align="center"><img src="images/mail.gif" width="14" height="11"></td>

<td width="16%" align="center">发件人</td>

<td width="39%" align="center">标题</td>

<td width="21%" align="center">日期</td>

</tr></table>

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"

BackColor="White" BorderColor="#CC9966" BorderWidth="1px" CellPadding="4"

DataKeyNames="id" Horiz

Width="100%" BorderStyle="None" ShowHeader="False" AllowPaging="True"

>

<FooterStyle BackColor="#FFFFCC" ForeColor="#330099" />

<Columns>

<asp:TemplateField >

<ItemStyle Horiz />

<ItemTemplate>

<asp:CheckBox ID=cb runat=server />

</ItemTemplate>

</asp:TemplateField>

<asp:ImageField HeaderImageUrl="images/bz.gif">

<ItemStyle Width="8%" />

</asp:ImageField>

<asp:TemplateField HeaderImageUrl="images/mail.gif">

<ItemTemplate>

<img src=<%# Eval("view").ToString()=="0"?"images/mailread.gif":"images/mail.gif" %>

border=0 align=center />

</ItemTemplate>

<ItemStyle Horiz Width="9%" />

</asp:TemplateField>

<asp:BoundField DataField="email" HeaderText="发件人">

<ItemStyle Width="16%" />

</asp:BoundField>

<asp:HyperLinkField DataNavigateUrlFields="id" DataNavigateUrlFormatString="viewmail.aspx?

id={0}"

DataTextField="title" HeaderText="标题" >

<ItemStyle Width="39%" />

</asp:HyperLinkField>

<asp:BoundField DataField="date" DataFormatString="{0:d}" HeaderText="日期">

<ItemStyle Width="21%" />

</asp:BoundField>

</Columns>

<PagerTemplate>

</PagerTemplate>

<SelectedRowStyle BackColor="#FFCC66" ForeColor="#663399" Font-Bold="True" />

<PagerStyle BackColor="#FFFFCC" ForeColor="#330099" Horiz />

<HeaderStyle BackColor="#990000" Font-Bold="True" ForeColor="#FFFFCC" />

<RowStyle BackColor="White" ForeColor="#330099" />

</asp:GridView>

<table width="100%" height="20" border="1" cellpadding="0" cellspacing="0"

bordercolorlight="#FFFFFF" bordercolordark="#E6E6E6" bgcolor="#FFFFFF">

<tr><td>

<asp:Button ID="Button1" runat="server" Text="全选" /> 

<asp:Button ID="Button2" runat="server" Text="删除" /></td>

<td align=right>

<asp:LinkButton ID="lnkbtnFrist" runat="server" >首页

</asp:LinkButton>

<asp:LinkButton ID="lnkbtnPre" runat="server" >上一页

</asp:LinkButton>

<asp:Label ID="lblCurrentPage" runat="server"></asp:Label>

<asp:LinkButton ID="lnkbtnNext" runat="server" >下一页

</asp:LinkButton>

<asp:LinkButton ID="lnkbtnLast" runat="server" >尾页

</asp:LinkButton>

跳转到第<asp:DropDownList ID="ddlCurrentPage" runat="server" AutoPostBack="True"

>

</asp:DropDownList>页</td>

</tr></table>

后台代码：

void DataBinds()

{

if (!opMail.ReceiveGetList(userid))

{

base.MessageBox(string.Empty, opMail.strErrMsg);

}

else

{

this.GridView1.DataSource = opMail.dataView;

this.GridView1.DataBind();

}

this.ddlCurrentPage.Items.Clear();

for (int i = 1; i <= this.GridView1.PageCount; i++)

{

this.ddlCurrentPage.Items.Add(i.ToString());

}

this.ddlCurrentPage.SelectedIndex = this.GridView1.PageIndex;

}

//全选checkbox

protected void Button1_Click(object sender, EventArgs e)

{

foreach (GridViewRow row in GridView1.Rows)

{

((CheckBox)row.Cells[0].FindControl("cb")).Checked = true;

}

}

//删除所选

protected void Button2_Click(object sender, EventArgs e)

{

for (int rowindex = 0; rowindex < this.GridView1.Rows.Count; rowindex++)

{

if (((CheckBox)this.GridView1.Rows[rowindex].Cells[0].FindControl("cb")).Checked == true)

{

//删除Convert.ToInt32(this.GridView1.DataKeys[rowindex].Value)

if (!opMail.ReceiveDelete(Convert.ToInt32(this.GridView1.DataKeys[rowindex].Value)))

{

base.MessageBox(string.Empty, opMail.strErrMsg);

}

}

}

DataBinds();

}

protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)

{

this.GridView1.PageIndex = e.NewPageIndex;

DataBinds();

}

protected void cbAll_CheckedChanged(object sender, EventArgs e)

{

if (this.cbAll.Checked == true)

{

foreach (GridViewRow row in GridView1.Rows)

{

((CheckBox)row.Cells[0].FindControl("cb")).Checked = true;

}

}

else

{

foreach (GridViewRow row in GridView1.Rows)

{

((CheckBox)row.Cells[0].FindControl("cb")).Checked = false;

}

}

}

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)

{

this.GridView1.PageIndex = this.ddlCurrentPage.SelectedIndex;

DataBinds();

}

protected void lnkbtnFrist_Click(object sender, EventArgs e)

{

this.GridView1.PageIndex = 0;

DataBinds();

}

protected void lnkbtnPre_Click(object sender, EventArgs e)

{

if (this.GridView1.PageIndex > 0)

{

this.GridView1.PageIndex = this.GridView1.PageIndex - 1;

DataBinds();

}

}

protected void lnkbtnNext_Click(object sender, EventArgs e)

{

if (this.GridView1.PageIndex < this.GridView1.PageCount)

{

this.GridView1.PageIndex = this.GridView1.PageIndex + 1;

DataBinds();

}

}

protected void lnkbtnLast_Click(object sender, EventArgs e)

{

this.GridView1.PageIndex = this.GridView1.PageCount;

DataBinds();

}

protected void GridView1_DataBound(object sender, EventArgs e)

{

this.lblCurrentPage.Text = string.Format("当前第{0}页/总共{1}页", this.GridView1.PageIndex +

1, this.GridView1.PageCount);

}