GridViewTemplates.EditForm Property
Specifies a template to display an edit form.
Namespace: DevExpress.Web
Assembly: DevExpress.Web.v23.2.dll
NuGet Package: DevExpress.Web
Declaration
Property Value
| Type | Default | Description |
|---|---|---|
| ITemplate | null | An object that implements the ITemplate interface. |
Remarks
When you specify the EditForm property, the control creates a template within a container object of the GridViewEditFormTemplateContainer type.
When you use an edit form template, the control does not update the data source automatically. Handle the RowUpdating event to manually update the data source.
Refer to the Create Templates topic for information on how to create templates for the Grid View control’s elements.
Design-Time Example
In the example below, the edit form template contains ASPxPageControl.
Use the ASPxGridViewTemplateReplacement objects to display regular controls within the template.
<dx:ASPxGridView ID="grid" runat="server" AutoGenerateColumns="False" KeyFieldName="EmployeeID"
OnRowUpdating="grid_RowUpdating" OnRowInserting="grid_RowInserting">
<Templates>
<EditForm>
<div style="padding: 4px 3px 4px">
<dx:ASPxPageControl ID="ASPxPageControl1" runat="server" Width="100%">
<TabPages>
<dx:TabPage Text="Info" Visible="true">
<ContentCollection>
<dx:ContentControl runat="server">
<dx:ASPxGridViewTemplateReplacement ID="Editors" runat="server"
ReplacementType="EditFormEditors" />
</dx:ContentControl>
</ContentCollection>
</dx:TabPage>
<dx:TabPage Text="Notes" Visible="true">
<ContentCollection>
<dx:ContentControl runat="server">
<dx:ASPxMemo runat="server" ID="notesEditor"
Text='<%# Eval("Notes")%>' Width="100%" Height="93px" />
</dx:ContentControl>
</ContentCollection>
</dx:TabPage>
</TabPages>
</dx:ASPxPageControl>
</div>
<div style="text-align: right; padding: 2px">
<dx:ASPxGridViewTemplateReplacement ID="UpdateButton" runat="server"
ReplacementType="EditFormUpdateButton" />
<dx:ASPxGridViewTemplateReplacement ID="CancelButton" runat="server"
ReplacementType="EditFormCancelButton" />
</div>
</EditForm>
</Templates>
</dx:ASPxGridView>
protected void grid_RowUpdating(object sender, ASPxDataUpdatingEventArgs e){
e.NewValues["Notes"] = GetMemoText();
}
protected void grid_RowInserting(object sender, ASPxDataInsertingEventArgs e){
e.NewValues["Notes"] = GetMemoText();
}
protected string GetMemoText(){
ASPxPageControl pageControl = grid.FindEditFormTemplateControl("pageControl") as ASPxPageControl;
ASPxMemo memo = pageControl.FindControl("notesEditor") as ASPxMemo;
return memo.Text;
}
Runtime Example
The following example creates an edit form template at runtime:
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using DevExpress.Web.ASPxEditors;
using DevExpress.Web.ASPxGridView;
public partial class _Default : System.Web.UI.Page {
protected void Page_Load(object sender, EventArgs e) {
ASPxGridView1.Templates.EditForm = new EditFormTemplate();
}
protected void ASPxGridView1_RowUpdating(object sender,
DevExpress.Web.Data.ASPxDataUpdatingEventArgs e) {
e.NewValues["ProductName"] = (ASPxGridView1.FindEditFormTemplateControl("tbProductName")
as ASPxTextBox).Value;
e.NewValues["UnitPrice"] = (ASPxGridView1.FindEditFormTemplateControl("spinUnitPrice")
as ASPxSpinEdit).Value;
}
}
public class EditFormTemplate : ITemplate {
public void InstantiateIn(Control container) {
Table table = CreateHtmlTable();
container.Controls.Add(table);
ASPxTextBox tb = new ASPxTextBox();
tb.ID = "tbProductName";
tb.CssFilePath = @"~/App_Themes/Soft Orange/{0}/styles.css";
tb.CssPostfix = "Soft_Orange";
tb.Value = DataBinder.Eval((container as
GridViewEditFormTemplateContainer).DataItem, "ProductName");
table.Rows[0].Cells[0].Controls.Add(tb);
ASPxSpinEdit spin = new ASPxSpinEdit();
spin.ID = "spinUnitPrice";
spin.CssFilePath = @"~/App_Themes/Soft Orange/{0}/styles.css";
spin.CssPostfix = "Soft_Orange";
spin.Value = DataBinder.Eval((container as
GridViewEditFormTemplateContainer).DataItem, "UnitPrice");
table.Rows[0].Cells[1].Controls.Add(spin);
ASPxGridViewTemplateReplacement tr = new ASPxGridViewTemplateReplacement();
tr.ReplacementType = GridViewTemplateReplacementType.EditFormUpdateButton;
table.Rows[1].Cells[2].Controls.Add(tr);
Literal separator = new Literal();
separator.Text = " | ";
table.Rows[1].Cells[2].Controls.Add(separator);
tr = new ASPxGridViewTemplateReplacement();
tr.ReplacementType = GridViewTemplateReplacementType.EditFormCancelButton;
table.Rows[1].Cells[2].Controls.Add(tr);
}
Table CreateHtmlTable() {
Table table = new Table();
table.Rows.Add(new TableRow());
table.Rows[0].Cells.AddRange(new TableCell[] { new TableCell(),
new TableCell(),
new TableCell()});
table.Rows.Add(new TableRow());
table.Rows[1].Cells.AddRange(new TableCell[] { new TableCell(),
new TableCell(),
new TableCell()});
return table;
}
}
Related GitHub Examples
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the EditForm property.
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.