c# - RadGrid 中的 ComboBox

Question

在插入/更新我的网格时，我很难在我的 RadGrid 中添加一个 ComboBox。因此，当我的网格进入编辑模式时，我希望显示一个 ComboBox。

这是我的 aspx 页面:

<telerik:radgrid id="radManageMembers" runat="server" cssclass="GridView" width="96%"
    autogeneratecolumns="true" onUpdateCommand="radManageMembers_UpdateCommand" Skin="WebBlue"
    onNeedDataSource="radManageMembers_NeedDataSource" OnDeleteCommand="radManageMembers_DeleteCommand"
    OnInsertCommand="radManageMembers_InsertCommand" OnItemCreated="radManageMembers_ItemCreated" OnItemCommand="radManageMembers_ItemCommand">
    <MasterTableView EditMode="InPlace" AutoGenerateColumns="false"
        TableLayout="Fixed" DataKeyNames="MemberID" CommandItemDisplay="TopAndBottom" Skin="WebBlue">
        <Columns>

            <telerik:GridBoundColumn DataField="MemberID" Display="false">
            </telerik:GridBoundColumn>

            <telerik:GridButtonColumn UniqueName="DeleteColumn" CommandName="Delete" ButtonType="PushButton" Text="Delete">
            </telerik:GridButtonColumn>

            <telerik:GridBoundColumn DataField="MemberName" UniqueName="MemberName" HeaderText="MemberName">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn DataField="FirstName" UniqueName="FirstName" HeaderText="FirstName">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn DataField="LastName" UniqueName="LastName" HeaderText="LastName" >
            </telerik:GridBoundColumn>                
            <telerik:GridBoundColumn DataField="Title" UniqueName="Title" HeaderText="Title">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn DataField="AdditionalNumber" UniqueName="AdditionalNumber" HeaderText="AdditionalNumber">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn DataField="Telephone" UniqueName="Telephone" HeaderText="Telephone">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn DataField="IDNumber" UniqueName="IDNumber" HeaderText="IDNumber">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn DataField="BusinessName" UniqueName="BusinessName" HeaderText="BusinessName">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn DataField="Email" UniqueName="Email" HeaderText="Email">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn DataField="LanguageCode" UniqueName="LanguageCode" HeaderText="LanguageCode">
            </telerik:GridBoundColumn>     

            <telerik:GridEditCommandColumn ButtonType="PushButton" UniqueName="EditCommandColumn">
                <HeaderStyle Width="85px"></HeaderStyle>
            </telerik:GridEditCommandColumn>

        </Columns>
            <EditFormSettings CaptionFormatString="Edit details for employee with ID {0}" CaptionDataField="EmployeeID">
            <FormTableItemStyle Width="100%" Height="29px"></FormTableItemStyle>
            <FormTableStyle GridLines="None" CellSpacing="0" CellPadding="2"></FormTableStyle>
            <FormStyle Width="100%"></FormStyle>
            <EditColumn ButtonType="ImageButton">
            </EditColumn>
        </EditFormSettings>
    </MasterTableView>
    <ClientSettings>
        <ClientEvents OnRowDblClick="RowDblClick"></ClientEvents>
    </ClientSettings>

我知道您必须使用 ItemCreated 事件，但我无法让它正常工作。

这是我在 ItemCreate 中的内容，但这段代码不起作用:

if (e.Item.OwnerTableView.IsItemInserted && e.Item is GridCommandItem)
{
      GridCommandItem insertItem = (GridCommandItem)e.Item;
      RadComboBox combo = (RadComboBox)insertItem.FindControl("Title");
}

我看过这里的例子 - http://demos.telerik.com/aspnet-ajax/grid/examples/dataediting/editmodes/defaultcs.aspx

但是这个 ComboBox 不会从数据库中填充不同的值，似乎有重复项，我发现 ComboBox 中没有意义。

我愿意看看是否有替代方法或解决此问题的正确方法。

编辑

ComboBox 的值来自数据库，所有值都是唯一的。

Answer 1

在您的代码中，您没有添加 Combobox。因此，请在 EditItemTemplate 中添加组合框，并尝试使用以下代码访问组合框

protected void grid1_ItemDataBound(object sender, Telerik.Web.UI.GridItemEventArgs e)
    {
       if (e.Item is GridEditableItem && e.Item.IsInEditMode)
       {
            GridEditableItem item = (GridEditableItem)e.Item;
            RadComboBox combo = ((RadComboBox)item.FindControl("RadComboBoxValore"));
            combo.DataSource = SqlDataSource2;
            combo.DataValueField = "EmployeeID";
            combo.DataTextField = "EmployeeID";
            combo.DataBind();   
        }
    }

或添加GridDropDownColumn