Gridview中TemplateField中的复选框在回发时丢失

Question

我有一个带有模板字段的gridview.在该模板字段中是一个复选框.我在gridview之外有一个提交按钮来分配已检查的记录.在回发时没有复选框注册为正在检查.这是我的代码:

<Columns>
                <asp:TemplateField>
                    <ItemTemplate>
                        <asp:CheckBox ID="cb" Checked="false" runat="server" />
                        <asp:Label ID="lblCFID" runat="server" Visible="false" Text='<%# Eval("ID") %>' />
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:BoundField HeaderStyle-HorizontalAlign="Center" DataField="Name" HeaderText="Name" />
                <asp:BoundField HeaderStyle-HorizontalAlign="Center" DataField="DOB" HeaderText="Date of Birth" />
                <asp:BoundField HeaderStyle-HorizontalAlign="Center" HeaderText="Gender" DataField="Gender"  />
                <asp:BoundField HeaderStyle-HorizontalAlign="Center" HeaderText="Status" DataField="Status"  />
                <asp:BoundField HeaderStyle-HorizontalAlign="Center" HeaderText="Plan Name" DataField="PlanName"  />
                <asp:BoundField HeaderStyle-HorizontalAlign="Center" HeaderText="Type" DataField="ControlType"  />
                <asp:BoundField HeaderStyle-HorizontalAlign="Center" HeaderText="Date of Service" dataformatstring="{0:MMMM d, yyyy}" htmlencode="false" DataField="DateofService"  />
            </Columns>

protected void AssignRecords(object sender, EventArgs e)
{
    int Rows = gvASH.Rows.Count;
    for (int i = 0; i < Rows; i++)
    {
        //CheckBoxField cb = ((CheckBoxField)gvASH.Rows[i].Cells[1]).;
        CheckBox cb = (CheckBox)gvASH.Rows[i].Cells[0].FindControl("cb");
        Label lblID = (Label)gvASH.Rows[i].Cells[0].FindControl("lblCFID");
        if (cb.Checked == true)
        {

            string ID = lblID.Text;
            //Assign Code
        }
    }
}

我在字符串ID = lblID.Text上设置断点; 但它永远不会发现任何被检查.

Answer 1

我认为你缺少的是,当你点击按钮并且你的页面是回发时,你重新绑定到gridview,你需要在这种情况下绑定

 if (!Page.IsPostBack)
    {
        GridView1.DataSourceID = "yourDatasourceID";
        GridView1.DataBind();
    }