Question

如果在gridview

上选中了复选框，我想获取隐藏字段的值

我的gridview：

<asp:GridView ID="gv_enfant" runat="server" AutoGenerateColumns="False" BackColor="White"
        BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" DataSourceID="SqlDataSource1"
        Width="533px">
        <Columns>
            <asp:TemplateField HeaderText="Select">
                <ItemTemplate>
                    <asp:CheckBox ID="CheckBoxenfant" runat="server"  />
                    <asp:HiddenField ID="codeenfant" runat="server" Value='<%# Eval("codeEnfants") %>' />
                </ItemTemplate>
               ..............
</asp:GridView>

以下是我如何遍历行并检查：

string myid = string.Empty; 
for (int i = 0; i < gv_enfant.Rows.Count; i++) 
{ 
    CheckBox chbox = (CheckBox)gv_enfant.Rows[i].Cells[0].FindControl("CheckBoxenfant"); 
    if (chbox.Checked) 
    { 
        myid = ((HiddenField)gv_enfant.Rows[i].Cells[0].FindControl("codeenfant")).Value; 
    } 
}

我在条件上设置了断点，调试器从未命中该行

Answer 1

并非所有行都有控件（例如页眉和页脚行）。我会这样试试：

string myid = string.Empty; 
for (int i = 0; i < gv_enfant.Rows.Count; i++) 
{ 
    var chbox = gv_enfant.Rows[i].Cells[0].FindControl("CheckBoxenfant") as CheckBox; 
    var codeenfant = gv_enfant.Rows[i].Cells[0].FindControl("codeenfant") as HiddenField
    if(chbox != null && codeenfant  != null)
    { 
        if (chbox.Checked) 
        { 
            myid = codeenfant.Value; 
        } 
    }
}

Answer 2

您可以这样做：

string myid = string.Empty;
foreach (GridViewRow row in gvShows.Rows)
{
    CheckBox chk = row.Cells[0].FindControl("CheckBoxenfant") as CheckBox;
    if (chk != null && chk.Checked)
    {
        myid = ((HiddenField)row.Cells[0].FindControl("codeenfant")).Value;
    }
}

此致

Gridview无法获得价值控制

2 个答案: