how do I programmatically set the selected row?

[Scott]

in my listboxes I use listbox.SelectedIndex++, I want to select the next row in my WPF GridView (I have paging arrows at the top that will navigate through the grid)

[Atanas]

Hi Scott,

Could you please give some more details about your approach or send a sample project to test locally and try to find a solution for you? Step-by-step details on how to reproduce the problem will also be greatly appreciated.

Best wishes,
Atanas
the Telerik team

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[Scott]

I have a grid with 10 rows in it.  When I click a button on my page, I want the next row to be selected.  I want to control the selected row in my grid programmatically.    That's it.

[Atanas]

Hi Scott,

Our Records have a boolean type property IsSelected and you have to play with it, to select a single row programmatically.

I am attaching a sample project compliant with your scenario. I hope this solves your issue. If you have any other questions, please do not hesitate to write us.

Greetings,
Atanas
the Telerik team

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[Erez]

Hello,

Greate example, however how about updating the visual scroll bar focus ?

Right now, if the 'next row' if off screen, the user has to manualy change the scroll bar to view it.

 

Thanks,

 

Erez

 

 

[Milan]

Hello Erez,

To bring an item into view you can use the method called BringDataItemIntoView. If you would like to scroll to the SelectedRecord you can do the following:

DataRecord record = (DataRecord)this.RadGridView1.SelectedRecord;
this.RadGridView1.BringDataItemIntoView(record.Data);

Hope this helps.

Sincerely yours,
Milan
the Telerik team

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[Erez]

Hi Milan,

It seems that there is a problem with "BringDataItemIntoView".

If I have, for example, just three rows in my grid, and I activate the "BringDataItemIntoView" method on

the second row, the first row disappears. I have to use the mouse wheel to make it appear.

Seems like a bug someone reported way back before Q1.

Thanks,

Erez

[Milan]

Hello Erez,

It seems that you are using very old version of our WPF controls (Q2 2008). If the ticket information is correct you can try to update to a newer version. Our latest version introduces many bug fixes, including the one with BrindDataItemIntoView, and many new features.

Kind regards,
Milan
the Telerik team

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[Erez]

Hello,

If I want to update, do I need to uninstall the previous (2009q1) or just run the new MSI ?

Regarding existing projects, am I to assume correctly that I will manually have to change their references the the 2009q2 dlls ?

Thanks,

 

Erez

[Missing User]

Hi Erez,

 You do not need to uninstall the previous version of our controls to run the new MSI, uninstalling is only required for the service pack installers.

 Your assumption is correct, to have your existing projects using the latest 2009Q2 binaries you need to manually change their references.

Best wishes,
Anastasia
the Telerik team

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[Erez]

Hello,

Regarding the Jul 16 and BringDataItemIntoView'.

I am sorry to say but it seems the 'BringDataItemIntoView' still exists in 2009Q2.

If I have, for example, three rows in the grid (dataView connected) and visible space to put some more and I activate the method on the last row (DataRowView item) a disabled vertical scroll bar appears (although it is not required) and the first row "disappears". I have to scroll with the Up Down arrows to see it.

Thanks,

Erez

[Milan]

Hello Erez,

I was not able to reproduce the issue. I am sending you a sample project that brings into view the last record but the problem does not appear. Could you try reproducing it?

All the best,
Milan
the Telerik team

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[Erez]

Hi Milan

Please use this as the data source instead of Message:

        public Window1()
        {
            InitializeComponent();

            DataTable dt = new DataTable();
            DataView dv;

            dt.Columns.Add("Display", typeof(string));
            dt.Columns.Add("Number", typeof(int));

            dt.Rows.Add("show", 1);
            dt.Rows.Add("show", 2);
            dt.Rows.Add("hide", 3);
            dt.Rows.Add("show", 4);
            dt.Rows.Add("show", 5);

            dv = new DataView(dt);

            dv.RowFilter = "Display = 'show'";

            RadGridView1.ItemsSource = dv;
        }

Change the event as follows:

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            int c;
            ((DataView)this.RadGridView1.ItemsSource).Table.Rows.Add("show", 5);

            c = ((DataView)this.RadGridView1.ItemsSource).Table.Rows.Count;
            if (c > 1)
            {
                var thirdItem = ((IList)this.RadGridView1.ItemsSource)[c-2];
                this.RadGridView1.BringDataItemIntoView(thirdItem);
            }
        }

Run it and give a couple of clicks on the button.

Thanks,

Erez

[Erez]

One more important note-

The problem seems to be related to the line:
' dv.RowFilter = "Display = 'show'";  '


If you remark it out, the phenomenon does not occur.

Thanks,

Erez

[Milan]

Hello Erez,

Thre is indeed a problem but I believe it is actually related to adding new items just before the call to BringDataItemIntoView. We have logged the issue and we will try to fix it as soon as possible. 

Fortunately there might be a workaround that can work for you - you can try running BrindDataItemIntoView through the Dispatcher.

private void Button_Click(object sender, RoutedEventArgs e)
{
    int c;
    ((DataView)this.RadGridView1.ItemsSource).Table.Rows.Add("show", 5);

    c = ((DataView)this.RadGridView1.ItemsSource).Table.Rows.Count;
    if (c > 1)
    {
        this.Dispatcher.BeginInvoke((Action)delegate
        {
            var thirdItem = ((IList)this.RadGridView1.ItemsSource)[c - 2];
            this.RadGridView1.BringDataItemIntoView(thirdItem);

        }, DispatcherPriority.SystemIdle, null);
    }
}

Hope this helps.

Regards,
Milan
the Telerik team

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[Mike Picco]

I know that this forum entry is dated and I have made the necessary modifications to my code to account for the changes but I am still having an issue.  I want to programatically select a record in a gridview.  I am using the following line of code to do that and the program is correctly selecting the record in the gridview.  The problem is that it is also "indicating" the selection of another record (the first one in the gridveiw).  When I step through the program I see the the other row is not actually selected but the visual highlighting of the row is still there.  Any ideas?

Ex:

this.GV_RightSide.Rows[0].IsSelected = false;

this.GV_RightSide.Rows[2].IsSelected = true;

 
Expectation:

Row[0] should not be selected and shold not be highlighted.  Row[2] should be selected and should be highlighted.

Actual Result:
Row[0] is not selected but IS still highlighted.  Row[2] is selected and is also highlighted.

One final note, I do have multirow select enabled (which is what I want).

Thanks,

Mike
 

[Dilum]

Well, following is the way I've coded to make the first row of the grid selected:

if (grdBills.HasItems)
                grdBills.SelectedItem = grdBills.Items[0];