Dynamically adding template columns in edit mode for bulk update

[Taeho Yoo]

Hi there,

Thanking you for very quick responses,

What I am trying to do is for a grid

1. add template columns to the grid
2. display the grid in edit mode
3. when click "save all", update all edited rows

What I did
for 1

GridTemplateColumn assResult = new GridTemplateColumn();
this.RadGridGradingBatchEntry.MasterTableView.Columns.Add(assResult);
assResult.DataField = "UniqueDateField";
assResult.UniqueName = "UniqueDateField";
assResult.SortExpression = "UniqueDateField";
assResult.HeaderText = "UniqueDateField";
assResult.SortExpression = "UniqueDateField";
assResult.DataType = System.Type.GetType("System.Int32");
assResult.Resizable = true;
assResult.ItemStyle.Wrap = true;
assResult.ItemStyle.Width = 15;
assResult.ItemTemplate = new MyTemplate()  // Mytemplate returns implements Itemplate and I created this class according to one of forums I found here.

for 2

protected void RadGridGradingBatchEntry_PreRender(object sender, System.EventArgs e)
    {
        foreach (GridDataItem item in RadGridGradingBatchEntry.Items)
        {
            item.Edit = true;
            RadGridGradingBatchEntry.Rebind();
        }
    }

for 3

protected override void RaisePostBackEvent(IPostBackEventHandler source, string eventArgument)
    {
        base.RaisePostBackEvent(source, eventArgument);
        if (source is RadGrid)
        {
            string[] postBackEventArgumentData = eventArgument.Split(':');
            switch (postBackEventArgumentData[0])
            {
                case "SaveAll":
                    foreach (string l_EachItem in postBackEventArgumentData[1].Split(','))
                    {
                        if (!(l_EachItem == ""))
                        {
                            GridItem item = (GridItem)((Table)RadGridGradingBatchEntry.MasterTableView.Controls[0]).Rows[int.Parse(l_EachItem)];
                            GridEditableItem editedItem = (GridEditableItem)item;
                            Hashtable newnewValues = new Hashtable();
                            item.OwnerTableView.ExtractValuesFromItem(newValues, editedItem);

                        }
                    }

                    break;
            }
        }
    }

Now problem is that when I look up newValues, all dynamically created columns are not visible but only columns that have been specified as bound column are available to access.

Your help will be appreciated as always,

Toby 

[Dimo]

Hello Taeho Yoo,

If RadGrid template columns are created programmatically, this must be done in Page_Init, as described here:

RadGrid Programmatic Creation

Please modify your project and let us know if you still have problems.

Greetings,
Dimo
the Telerik team

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[Carlos]

Hi,
I am having the same issue, but I cannot turn off the viewState on the page since I am using it heavily. I am trying to follow the link RadGrid Programmatic Creation but it seems not to have that page anymore. Can you point me to the right direction?

Thanks,
Carlos

[taeho]

Hi Carlos,

Sorry that I am not giving you the right answer you are looking for but we decided to scrap the bulk update function using .net
Simply not reliable enough not because of ASP.NET application itself but because of unreliable network and internet I suppose.
So instead we develop Microsoft excel application.

Cheers

Taeho

[Sebastian]

Hi Carlos,

Here is the proper url to the programmatic creation topic of RadGrid for ASP.NET AJAX:
http://www.telerik.com/help/aspnet-ajax/grid-programmatic-creation.html

Greetings,
Sebastian
the Telerik team