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Disable changing cursor in Gridview cell
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This is a migrated thread and some comments may be shown as answers.
Markus
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Markus asked on 18 Dec 2012, 09:08 AM
Hello,

in my DataGridView I have a column for E-Mail adresses. The user clicks on the E-Mail adress and my programm opens a new E-Mail.
When the mouse is over the E-Mail adress I have this CellMouseMove Event to change the Cursor (to Cursor.Hand): 
private void dg_CustomerContact_CellMouseMove(object sender, MouseEventArgs e)
        {
            GridDataCellElement cell = this.dg_CustomerContact.RootElement.ElementTree.GetElementAtPoint(e.Location) as GridDataCellElement;
            if (cell != null && ((GridViewDataColumn)cell.ColumnInfo).Name == "dg_TalkedWith_col_Email")
            {
                originalCursor = this.dg_CustomerContact.Cursor;
                this.dg_CustomerContact.Cursor = Cursors.Hand;
            }
            else
            {
                if (originalCursor != null)
                {
                    this.dg_CustomerContact.Cursor = originalCursor;
                    originalCursor = Cursors.Default;
                }
            }
        }


But when there is no E-Mail adress the cursor should not change to "Cursor.Hand". Any suggestion how to solve this?

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Anton
Telerik team
answered on 21 Dec 2012, 08:28 AM
Hi Markus,

Thank you for writing.

You can achieve the desired behavior by adding email validation with regular expressions in your CellMouseMove Event. For example :
void radGridView1_CellMouseMove(object sender, MouseEventArgs e)
{
    GridDataCellElement cell = this.radGridView1.RootElement.ElementTree.GetElementAtPoint(e.Location) as GridDataCellElement;
    if (cell != null && ((GridViewDataColumn)cell.ColumnInfo).Name == "Email")
    {
        if(IsValidEmail(cell.Text))
        {
            this.radGridView1.Cursor = Cursors.Hand;
        }
        else
        {
            this.radGridView1.Cursor = Cursors.Default;
        }  
    }
    else
    {
        this.radGridView1.Cursor = Cursors.Default;
    }
}
 
static bool IsValidEmail(string email)
{
    string MatchEmailPattern = @"^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}" +
         @"\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\" +
         @".)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$";
 
    if (email != null)
    {
        return Regex.IsMatch(email, MatchEmailPattern);
    }
    else
    {
        return false;
    }
}
Attached is a sample project that demonstrate how the code above works.

I hope this helps. Let me know if you have any additional questions.

Kind regards,
Anton
the Telerik team
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Allen
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answered on 23 Mar 2013, 08:08 AM


Good day!!!

I was looking at the example that was attached to the question. It work just fine. But I have a question about the solution...

When the mouse goes of the cell goes over the cell with the valid email address the cursor changes to the 'hand'. If I move the cursor out from that cell, moving horizontally directly to the white grid space to the right, the cursor still remains as a 'hand' until I go into a cell that doesn't have an email address. How do I change the code so that it changes back to 'pointer'.
0
Anton
Telerik team
answered on 27 Mar 2013, 02:59 PM
Hi Allen,

Thank you for writing.

To handle this case you should subscribe to the MouseMove event of the TableElement and reset the cursor. For example:
this.radGridView1.TableElement.MouseMove += new MouseEventHandler(TableElement_MouseMove);
 ...........................................
 void TableElement_MouseMove(object sender, MouseEventArgs e)
 {
     this.radGridView1.Cursor = Cursors.Default;
 }

I hope this helps.

Kind regards,
Anton
the Telerik team
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