Tag

[Tommy Anderson]

For each row I add in the GirdView, I set a tag like this

GridViewDataRowInfo row = aGridView.Rows.AddNew();
row.Tag = 1;

RadGridView.Rows.Add(row);

and when I click on a row in the Girdview, I want to get the associated tag to the selectedrow.

The problem is that RadGridView.SelectedRows[0].tag is always null.

I found out that RadGridView.SelectedRows[0] return a GridViewRowInfo and not a GridViewDataRowInfo.

Is there a quick way to have the tag of the GridViewDataRowInfo object of the selectedrow ?

 

[Nick]

Hi Tommy Anderson,

Thank you for contacting us. We found a bug in our code which we fixed so your code should work in Q2 2009 SP1 which is to be released in a couple of weeks. Your code is a bit wrong though:

instead of

GridViewDataRowInfo row = aGridView.Rows.AddNew();
row.Tag = 1;
RadGridView.Rows.Add(row);

use just

GridViewDataRowInfo row = aGridView.Rows.AddNew();
row.Tag = 1;

AddNew method adds the new row to the collection as well.

Do not hesitate to write us back if you have further questions. I have updated your Telerik points for helping us find a bug.

Regards,
Nick
the Telerik team

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[Tommy Anderson]

You are right about the rows.add. I noticed after that it was adding the row twice.

Thank you.

[Phillip]

Hi,

I am experiencing the same problem, and have Q2 2009 SP1. I cannot see a reference to this problem in the release notes and don't think the fix got into this release. Can you confirm that it has/has not ?

Phillip.

[Nick]

Hi Phillip,

Thank you for contacting us. I checked that and it seems fixed. We have probably missed to include it in the release notes. Can you send us the code that you use when reproducing the issue. Thank you very much for your time. Here is a link to the online documentation about the Tag property.

Sincerely yours,
Nick
the Telerik team

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[Phillip]

Nik,

Thanks for your reply. I built a single form project with a RadGridView with a single Command button column. I put the followng code in the form.

        protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);
            this.radGridView1.Rows.AddNew();
        }

        private void radGridView1_RowsChanged(object sender, Telerik.WinControls.UI.GridViewCollectionChangedEventArgs e)
        {
            if (e.Action == Telerik.WinControls.Data.NotifyCollectionChangedAction.Add)
            {
                Telerik.WinControls.UI.GridViewDataRowInfo newRowInfo = e.NewItems[0] as Telerik.WinControls.UI.GridViewDataRowInfo;
                System.Diagnostics.Debug.Assert(newRowInfo.Tag != null);
            }
        }

        private void radGridView1_CommandCellClick(object sender, EventArgs e)
        {
            Telerik.WinControls.UI.GridCommandCellElement commandButtonCell = sender as Telerik.WinControls.UI.GridCommandCellElement;
            System.Diagnostics.Debug.Assert(commandButtonCell.RowInfo.Tag != null);

        }

        private void radGridView1_RowsChanging(object sender, Telerik.WinControls.UI.GridViewCollectionChangingEventArgs e)
        {
            if (e.Action == Telerik.WinControls.Data.NotifyCollectionChangedAction.Add)
            {
                Telerik.WinControls.UI.GridViewDataRowInfo newRowInfo = e.NewItems[0] as Telerik.WinControls.UI.GridViewDataRowInfo;
                newRowInfo.Tag = "Sample Tag Value";
            }
        }

I used Q2 2009 SP1. When the RowsChanging event is fired, it puts in the Tag property. When the RowsChanged is fired, the Tag property is still there. When I click on the command cell and the CommandCellClick is fired, the Tag has gone to Null.

Hope this helps.

[Nick]

Hi Phillip,

Thank you for contacting us. I guess it is pretty unintuitive, but the code snippet below should do the job:

((GridViewNewRowInfo)commandButtonCell.RowInfo ).DataRowInfo.Tag

Do not hesitate to write me back if you have further questions.

Greetings,
Nick
the Telerik team

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[Phillip]

Sorry, this doesn't work for me; In my example I replaced the Debug.Assert line with 
 

if (commandButtonCell.RowInfo.GetType() == typeof(Telerik.WinControls.UI.GridViewNewRowInfo))
            {
                System.Diagnostics.Debug.Assert(((Telerik.WinControls.UI.GridViewNewRowInfo)commandButtonCell.RowInfo).DataRowInfo.Tag != null);
            }
            else
            {
                System.Diagnostics.Debug.Assert(commandButtonCell.RowInfo.Tag != null);
            }

To cater for the situation where the row might be either a "new row" or a "non new row".

However in all my tests, if the RowInfo type is GridViewNewRowInfo the .DataRowInfo property is null. I therefore cannot use your solution to get at the tag property because I the DataRowInfo property is not set on a new row.

Looking forward to getting a different solution

Phillip

[Phillip]

Nick,

My forum summary page tells me you've replied as the last contributor to this thread, but I cannot seem to be able to see your answer - did you respond ?

[Nick]

Hi Phillip,

We will be happy to help you further after you provide the requested details in your other support ticket (id: 241240).

Regards,
Nick
the Telerik team

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Watch a video on how to optimize your support resource searches and check out more tips on the blogs.