信息时代webDataGrid中的FindControl

Question

我有包含标签的ig:TemplateDataField。在InitializeRow事件处理程序中，我尝试查找带有e.Row.FindControl标签，但得到的结果为空。

我找不到另一种方法来找到我的标签。如何在InitializeRow事件期间查找WebDataGrid行中的控件？

Answer 1

您必须指定要在其中搜索的列，如e.Row.Items[0].FindControl("ControlID") where 0列索引。

Answer 2

下面是一个应该有效的解决方案。注意:代码是用于Infragistics控件的。WebDataGrid控件是UltraWebGrid的继任者。

C#：

protected void UltraWebGridCustomers_InitializeRow(object sender, Infragistics.WebUI.UltraWebGrid.RowEventArgs e)
{
    TemplatedColumn col = (TemplatedColumn)e.Row.Cells.FromKey("HyperLinkEmailColumn").Column;
    CellItem cellItem = (CellItem)col.CellItems(e.Row.Index);
    HyperLink hyperLinkEmail = (HyperLink)cellItem.FindControl("HyperLinkSendEmail");
    hyperLinkShowDetails.Attributes.Add("onclick", "alert('This is the email link');");
}

VB.NET：

Private Sub UltraWebGridCustomers_InitializeRow(ByVal sender As Object, ByVal e As Infragistics.WebUI.UltraWebGrid.RowEventArgs) Handles UltraWebGridCustomers.InitializeRow
        Dim col As TemplatedColumn = CType(e.Row.Cells.FromKey("HyperLinkEmailColumn").Column, TemplatedColumn)
        Dim cellItem As CellItem = CType(col.CellItems(e.Row.Index), CellItem)
        Dim hyperLinkEmail As HyperLink = CType(cellItem.FindControl("HyperLinkSendEmail"), HyperLink)
        hyperLinkShowDetails.Attributes.Add("onclick", "alert('This is the email link');")
End Sub

Aspx代码：

<infragistics:UltraWebGrid ID="UltraWebGridCustomers" runat="server">
    <Bands>
        <infragistics:UltraGridBand BaseTableName="Customers" Key="BandCustomers">
            <Columns>
                ...
                <infragistics:UltraGridColumn Key="NameColumn" BaseColumnName="Name" IsBound="True">
                    <Header Caption="Name">
                    </Header>
                </infragistics:UltraGridColumn>
                <infragistics:UltraGridColumn Key="EmailColumn" BaseColumnName="Email" IsBound="True">
                    <Header Caption="Email Address">
                    </Header>
                </infragistics:UltraGridColumn>
                <infragistics:TemplatedColumn Key="HyperLinkEmailColumn">
                    <CellTemplate>                        
                        <asp:HyperLink ID="HyperLinkSendEmail" NavigateUrl='<%# "~/EmailForm.aspx?email=" & DataBinder.Eval(Container.DataItem,"Email")%>' ToolTip="Send Email" runat="server" />
                    </CellTemplate>
                </infragistics:TemplatedColumn>
                ...
            </Columns>
            <AddNewRow View="NotSet" Visible="NotSet">
            </AddNewRow>                            
        </infragistics:UltraGridBand>
    </Bands>
    ...
</infragistics:UltraWebGrid>