请尝试以下代码 sn-p。
ASPX
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" DataKeyNames="TotalAmount" ShowFooter="true">
<Columns>
<asp:TemplateField HeaderText="select to pay">
<ItemTemplate>
<asp:CheckBox ID="chkSelect" runat="server" OnCheckedChanged="chkSelect_OnCheckedChanged"
AutoPostBack="true" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Amount">
<ItemTemplate>
<%# Eval("TotalAmount", "{0:#,##0.00}")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Amount applied">
<ItemTemplate>
<asp:TextBox ID="txtPayAmount" Width="80px" runat="server" />
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="TextBox1" Width="80px" runat="server" />
</FooterTemplate>
<ItemStyle HorizontalAlign="Center" />
</asp:TemplateField>
</Columns>
</asp:GridView>
ASPX.CS
public partial class Forum : System.Web.UI.Page
{
protected void Page_Init(object sender, System.EventArgs e)
{
GridView gv = new GridView();
gv.ID = "GridView1";
gv.AutoGenerateColumns = false;
gv.ShowFooter = true;
gv.DataKeyNames = new string[] { "TotalAmount" };
TemplateField tf = new TemplateField();
tf.ItemTemplate = new MyCustomTemplate();
gv.Columns.Add(tf);
BoundField bf = new BoundField();
bf.DataField = "TotalAmount";
gv.Columns.Add(bf);
tf = new TemplateField();
tf.ItemTemplate = new MyCustomTextTemplate();
tf.FooterTemplate = new MyCustomFooterTextTemplate();
gv.Columns.Add(tf);
this.form1.Controls.Add(gv);
}
protected void Page_Load(object sender, System.EventArgs e)
{
GridView gv = form1.FindControl("GridView1") as GridView;
if (!IsPostBack)
{
dynamic data = new[] {
new { ID = 1, Name = "Name1",TotalAmount= 10},
new { ID = 2, Name = "Name2",TotalAmount= 20},
new { ID = 3, Name = "Name3",TotalAmount= 30},
new { ID = 4, Name = "Name4",TotalAmount= 40},
new { ID = 5, Name = "Name5",TotalAmount= 50}
};
gv.DataSource = data;
gv.DataBind();
}
}
protected void Page_PreRender(object sender, System.EventArgs e)
{
}
protected void RadGrid1_NeedDataSource(object sender, GridNeedDataSourceEventArgs e)
{
dynamic data = new[] {
new { ID = 1, Name ="Name_1"},
new { ID = 2, Name = "Name_2"},
new { ID = 3, Name = "Name_3"},
new { ID = 4, Name = "Name_4"},
new { ID = 5, Name = "Name_5"}
};
}
}
public class MyCustomTemplate : ITemplate
{
public void InstantiateIn(System.Web.UI.Control container)
{
CheckBox cb = new CheckBox();
cb.ID = "chkSelect";
cb.AutoPostBack = true;
cb.CheckedChanged += new EventHandler(cb_CheckedChanged);
container.Controls.Add(cb);
}
protected void cb_CheckedChanged(object sender, EventArgs e)
{
GridViewRow row = (sender as CheckBox).NamingContainer as GridViewRow;
TextBox txtPayAmount = row.FindControl("txtPayAmount") as TextBox;
if ((sender as CheckBox).Checked)
{
txtPayAmount.Text = Convert.ToString((row.Parent.Parent as GridView).DataKeys[row.RowIndex]["TotalAmount"]);
}
else
{
txtPayAmount.Text = string.Empty;
}
int TotalAmount = 0;
foreach (GridViewRow rowv in (row.Parent.Parent as GridView).Rows)
{
CheckBox chk = rowv.FindControl("chkSelect") as CheckBox;
if (chk.Checked)
{
TotalAmount += Convert.ToInt32((row.Parent.Parent as GridView).DataKeys[rowv.RowIndex]["TotalAmount"]);
}
}
GridViewRow rowf = (row.Parent.Parent as GridView).FooterRow;
((TextBox)rowf.FindControl("TextBox1")).Text = TotalAmount.ToString();
}
}
public class MyCustomTextTemplate : ITemplate
{
public void InstantiateIn(System.Web.UI.Control container)
{
TextBox cb = new TextBox();
cb.ID = "txtPayAmount";
container.Controls.Add(cb);
}
}
public class MyCustomFooterTextTemplate : ITemplate
{
public void InstantiateIn(System.Web.UI.Control container)
{
TextBox cb = new TextBox();
cb.ID = "TextBox1";
container.Controls.Add(cb);
}
}