GridView 批量删除,自定义分页,定位页码

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" OnCheckedChanged="cbAll_CheckedChanged" /></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" HorizontalAlign="Center"


Width="100%" BorderStyle="None" ShowHeader="False" AllowPaging="True" OnDataBound="GridView1_DataBound">




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


<Columns>


<asp:TemplateField >


<ItemStyle HorizontalAlign="Center" />


<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=middle />


</ItemTemplate>


<ItemStyle HorizontalAlign="Center" 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" HorizontalAlign="Center" />


<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" OnClick="Button1_Click" /> 


<asp:Button ID="Button2" runat="server" Text="删除" OnClick="Button2_Click" /></td>


<td align=right>


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


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


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


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


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


跳转到第<asp:DropDownList ID="ddlCurrentPage" runat="server" AutoPostBack="True" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged">


</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);


}