ASPxTreeList.FindDataCellTemplateControl(String, TreeListDataColumn, String) Method

Searches for the server control contained within the specified data cell’s template.

Namespace: DevExpress.Web.ASPxTreeList

Assembly: DevExpress.Web.ASPxTreeList.v19.2.dll

Declaration

C#

public Control FindDataCellTemplateControl(
    string nodeKey,
    TreeListDataColumn column,
    string id
)

VB.NET

Public Function FindDataCellTemplateControl(
    nodeKey As String,
    column As TreeListDataColumn,
    id As String
) As Control

Parameters

Name	Type	Description
nodeKey	String	A String value that identifies the node.
column	TreeListDataColumn	A TreeListDataColumn object that represents the data column where the requested cell resides. If null (Nothing in Visual Basic), the search is performed within all cells in the specified node.
id	String	A String value that identifies the control within the specified cell.

Returns

Type	Description
Control	A Control object that represents the control contained within the specified data cell’s template.

Remarks

To learn more, see Templates.

Example

In this example, the ASPxTreeList.HtmlRowPrepared event is handled to display appropriate images within data cells. The ASPxTreeList.FindDataCellTemplateControl method is used to access ASPxImage and ASPxLabel template controls contained within data cells.

The image below shows the result:

C#

protected void ASPxTreeList1_HtmlRowPrepared(object sender,
DevExpress.Web.ASPxTreeList.TreeListHtmlRowEventArgs e) {
    if(e.RowKind != DevExpress.Web.ASPxTreeList.TreeListRowKind.Data) return;
    ASPxImage img = ASPxTreeList1.FindDataCellTemplateControl(e.NodeKey,
      ASPxTreeList1.Columns["Product"] as TreeListDataColumn, "ASPxImage1") as ASPxImage;
    ASPxLabel lb = ASPxTreeList1.FindDataCellTemplateControl(e.NodeKey,
      ASPxTreeList1.Columns["Product"] as TreeListDataColumn, "ASPxLabel1") as ASPxLabel;
    if (ASPxTreeList1.FindNodeByKeyValue(e.NodeKey).HasChildren) {
        img.ImageUrl = @"~\i\product-group.png";
        lb.Font.Size = 12;
        lb.Font.Bold = true;
    }
    else
        img.ImageUrl = @"~\i\product.png";
}

ASPX

<dxwtl:ASPxTreeList ID="ASPxTreeList1" runat="server" AutoGenerateColumns="False"
    DataSourceID="AccessDataSource1" KeyFieldName="ID" ParentFieldName="ParentID"
    Width="200px" OnHtmlRowPrepared="ASPxTreeList1_HtmlRowPrepared">
    <Columns>
        <dxwtl:TreeListDataColumn Caption="Products" FieldName="Product" VisibleIndex="0">
            <DataCellTemplate>
            <table cellspacing="0">
                <tr>
                    <td>
                        <dxe:ASPxImage ID="ASPxImage1" runat="server">
                        </dxe:ASPxImage>
                    </td>
                    <td style="vertical-align:middle">
                        <dxe:ASPxLabel ID="ASPxLabel1" runat="server"
                         Text='<%# Eval("Product") %>'>
                        </dxe:ASPxLabel>
                    </td>
                </tr>
            </table>
            </DataCellTemplate>
        </dxwtl:TreeListDataColumn>
    </Columns>
</dxwtl:ASPxTreeList>

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the FindDataCellTemplateControl(String, TreeListDataColumn, String) method.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-display-an-image-based-on-a-cell-value-e1014/CS/ImageForValue/Default.aspx.cs#L45

}
ASPxImage img = (ASPxImage)ASPxTreeList1.FindDataCellTemplateControl(e.NodeKey, e.Column, "ASPxImage1");
if(fileName != string.Empty)

multi-node-editing-via-a-datacell-template-e1314/CS/WebSite/Default.aspx.cs#L42

TreeListDataColumn dc = (TreeListDataColumn)col;
ASPxTextBox tb = (ASPxTextBox)tree.FindDataCellTemplateControl(node.Key, dc, "editor");
if (!tb.Text.Equals(node.GetValue(dc.FieldName)))

VB.NET

how-to-display-an-image-based-on-a-cell-value-e1014/VB/ImageForValue/Default.aspx.vb#L45

End Select
Dim img As ASPxImage = CType(ASPxTreeList1.FindDataCellTemplateControl(e.NodeKey, e.Column, "ASPxImage1"), ASPxImage)
If fileName <> String.Empty Then

multi-node-editing-via-a-datacell-template-e1314/VB/WebSite/Default.aspx.vb#L37

Dim dc As TreeListDataColumn = CType(col, TreeListDataColumn)
Dim tb As ASPxTextBox = CType(tree.FindDataCellTemplateControl(node.Key, dc, "editor"), ASPxTextBox)
If (Not tb.Text.Equals(node.GetValue(dc.FieldName))) Then