Rank 1
Problem description:
The sample project contains a RadGrid (2 columns, 4 rows) that switches the second column in the second and fourth rows in edit mode. The problem is that the first column does not display its value anymore (the value is "lost") while the second column is in edit mode. When I try to iterate through all the rows in Save_Command handler, I cannot get the value from these columns either.
Default.aspx
<%
@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%
@ Register TagPrefix="tlk" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%
@ Register TagPrefix="ajax" Namespace="System.Web.UI" Assembly="System.Web.Extensions" %>
<!
DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<
html xmlns="http://www.w3.org/1999/xhtml">
<
head runat="server">
<title>Untitled Page</title>
</
head>
<
body>
<form id="form1" runat="server">
<ajax:ScriptManager ID="ScriptManager" runat="server">
</ajax:ScriptManager>
<tlk:RadGrid ID="RadGrid1" Width="100%" AllowMultiRowEdit="true"
OnNeedDataSource="RadGrid_NeedDataSource" runat="server"
OnItemCreated="RadGrid1_ItemCreated" >
<MasterTableView ShowHeadersWhenNoRecords="true" Width="100%" AutoGenerateColumns="false" EditMode="InPlace" >
<Columns>
<tlk:GridBoundColumn UniqueName="Name" HeaderText="Name" DataField="Name" />
<tlk:GridBoundColumn UniqueName="Amount" HeaderText="Amount" DataField="Amount" />
</Columns>
<EditItemStyle BackColor="transparent" />
</MasterTableView>
<ClientSettings>
<Resizing AllowColumnResize="true" AllowRowResize="true" />
<Scrolling AllowScroll="true" UseStaticHeaders="true" />
</ClientSettings>
<HeaderStyle Width="150px" />
</tlk:RadGrid>
<div style="text-align:right; margin-top:5px">
<asp:Button ID="SaveButton" Text="Save" runat="server" OnCommand="Save_Command" />
</div>
</form>
</
body>
</
html>
Default.aspx.cs
using
System;
using
System.Data;
using
System.Configuration;
using
System.Collections;
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
Telerik.Web.UI;
public
partial class _Default : System.Web.UI.Page
{
protected void RadGrid_NeedDataSource(object source, GridNeedDataSourceEventArgs e)
{
DataTable table = new DataTable();
table.Columns.Add(
new DataColumn("Name"));
table.Columns.Add(
new DataColumn("Amount"));
table.Rows.Add(
new object[] { "John", "11" });
table.Rows.Add(
new object[] { "David", "22" });
table.Rows.Add(
new object[] { "Elvis", "33" });
table.Rows.Add(
new object[] { "Oliver", "44" });
((
RadGrid)source).DataSource = table;
}
protected void Page_PreRender(object sender, EventArgs e)
{
RadGrid1.Items[1].Edit =
true;
RadGrid1.Items[3].Edit =
true;
RadGrid1.Rebind();
}
protected void RadGrid1_ItemCreated(object sender, GridItemEventArgs e)
{
if (e.Item is GridDataItem && e.Item.IsInEditMode)
{
foreach (GridColumn column in e.Item.OwnerTableView.RenderColumns)
{
if (column is GridBoundColumn)
{
if (string.Compare(column.UniqueName, "Amount", StringComparison.InvariantCultureIgnoreCase) == 0)
{
((
GridBoundColumn)column).ReadOnly = false;
TextBox textBox = null;
if (e.Item is GridDataItem)
{
textBox = ((
TextBox)((GridDataItem)e.Item)[column.UniqueName].Controls[0]);
textBox.Style[
"width"] = "100%";
textBox.Style[
"height"] = "100%";
textBox.Style[
"border"] = "1px";
textBox.Style[
"text-align"] = "right";
}
}
else
{
((
GridBoundColumn)column).ReadOnly = true;
}
}
}
}
}
protected void Save_Command(object source, EventArgs e)
{
string name = "";
foreach (GridDataItem item in RadGrid1.Items)
{
name = item[
"Name"].Text;
}
}
}
I also have a second question: I would like to have an extra row to show the rollup on the editable column. Is it possible to have this total being updated as the user modifies the editable fields ?
6 Answers, 1 is accepted
I suggest that you add the readonly field to the DataKeyNames collection of the MasterTableView in order to access its value as desired.
Find more about retrieving primary key values in the following online resources:
http://www.telerik.com/help/aspnet-ajax/grdretrieveprimarykeyfieldvaluesforitems.html
http://www.telerik.com/help/aspnet-ajax/grdaccessingcellsandrows.html
http://www.telerik.com/help/aspnet-ajax/grdupdatinginplaceandeditforms.html
Let us know if you need further directions/help.
Regards,
Iana
the Telerik team
Check out Telerik Trainer, the state of the art learning tool for Telerik products.
Rank 1
Adding the readonly field to the DataKeyNames does not address (and does not solve) the first issue which is the fact that the read only field value is not displayed at all while the other column is in edit mode. Getting the read only value should work the same for all rows regardless of the other column being in edit mode or not. As such, adding the readonly field to the DataKeyNames is merely a workaround not a solution (or the "correct" way of doing it).
There is also a question at the end of my post. Could you please try to answer that too ?
Best Regards
Excuse me for not answering your question from the bottom of the ticket.
There is no built-in functionality in RadGrid for achieving the desired result from this second question.
Regarding your first issue:
Please try removing the transparent back color from the EditItemStyle or change with another one and check if the ReadOnly fields are displayed when in edit mode.
Sincerely yours,
Iana
the Telerik team
Check out Telerik Trainer, the state of the art learning tool for Telerik products.
Rank 1
Iron
If there is a way I would like to know what it is.
Rank 1
http://www.telerik.com/help/aspnet-ajax/grdeditforms.html
http://www.telerik.com/demos/aspnet/prometheus/Grid/Examples/Programming/AccessingCellsAndRows/DefaultCS.aspx
http://www.telerik.com/help/aspnet-ajax/grdaccessingcellsandrows.html
Kiara
Rank 1
Iron
Thanks