asp.net - 在 asp.net 中获取 radgrid telerik 隐藏列的值

Question

我有一个 radgrid，我在其中隐藏了 Id 列。现在我想在链接按钮点击时获得它的价值。如果列可见，它工作正常，但

它在不可见时显示空白值。我的代码是

 protected void RadGrid1_ItemCommand(object sender, Telerik.Web.UI.GridCommandEventArgs e)
{
    if (e.CommandName == "Detail")
    {
        GridDataItem dataItm = e.Item as GridDataItem;

        string value = dataItm["Id"].Text;
    }
}

Answer 1

请尝试使用以下代码片段。

ASPX

 <telerik:RadGrid ID="RadGrid1" runat="server" AutoGenerateColumns="false" OnNeedDataSource="RadGrid1_NeedDataSource"
    OnItemCommand="RadGrid1_ItemCommand">
    <MasterTableView DataKeyNames="ID">
        <Columns>
            <telerik:GridBoundColumn DataField="ID" UniqueName="ID" HeaderText="ID">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn DataField="ID" UniqueName="ID1" HeaderText="ID" Visible="false">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn DataField="ID" UniqueName="ID2" HeaderText="ID" Display="false">
            </telerik:GridBoundColumn>
            <telerik:GridTemplateColumn>
                <ItemTemplate>
                    <asp:Button ID="Button1" runat="server" CommandName="Detail" CommandArgument='<%# Eval("ID") %>' />
                </ItemTemplate>
            </telerik:GridTemplateColumn>
        </Columns>
    </MasterTableView>
</telerik:RadGrid>

ASPX.CS

protected void RadGrid1_NeedDataSource(object sender, GridNeedDataSourceEventArgs e)
{
    dynamic data = new[] {
        new { ID = 1, Name ="Name1"},
        new { ID = 2, Name = "Name2"},
        new { ID = 3, Name = "Name3"},
         new { ID = 4, Name = "Name4"},
        new { ID = 5, Name = "Name5"}
    };

    RadGrid1.DataSource = data;

}

protected void RadGrid1_ItemCommand(object sender, GridCommandEventArgs e)
{
    if (e.CommandName == "Detail")
    {
        GridDataItem item = e.Item as GridDataItem;

        string strID = item.GetDataKeyValue("ID").ToString(); // We are able to get ID field value here
        string strID1 = item["ID1"].Text; // We are NOT able to get ID field value here Because column is Visible false
        string strID2 = item["ID2"].Text; // We are able to get ID field value here
        string strCommandArgument = e.CommandArgument.ToString(); // We are able to get ID field value here

    }
}

请使用Display属性代替Visible属性。

Answer 2

最简单的方法是设置 Visible = true 和 Display=false，你应该没问题。

Answer 3

列总是不可见的吗？如果是这样，您可以将 ID 放在 DataKeyNames 属性中，如下所示：

DataKeyNames="ID"

然后通过以下方式访问它：

var id = (int)dataItm.getDataKeyValue("ID");