CellValue.CellValueType

[Barbara Arz]

Hi,
I want to enter numerical values in a grid, but do this I had to face some problems. Whats the best way to do this?

If i set CellValue.CellValueType = Double or Decimal and enter then a not numerical value i get the following exception:
System.FormatException: Input string was not in a correct format.
at System.Number.ParseDecimal(String s, NumberStyles style, NumberFormatInfo info)
at System.Decimal.Parse(String s, NumberStyles style, IFormatProvider provider)
at Syncfusion.Windows.Forms.Grid.GridCellValueConvert.Parse(String s, Type resultType, IFormatProvider provider, String format)
at Syncfusion.Windows.Forms.Grid.GridCellModelBase.ApplyFormattedText(GridStyleInfo style, String text, Int32 textInfo)
at Syncfusion.Windows.Forms.Grid.GridStyleInfo.ApplyFormattedText(String text)
at Syncfusion.Windows.Forms.Grid.GridCellRendererBase.OnValidate()

If I set ValidateValue.NumberRequired=true, I can only enter numierical values, but I can not set the cell value to empty (null)

BR
Barbra Arz

[Administrator]

What version are you using? In the 2.0 code base, you can leave a double cell empty. Attached is a sample that seems to work OK for me. Is there something I am missing? WindowsApplication9_7543.zip

[Administrator]

I am using Version 1.6.1.8
BR
Barbara

[Administrator]

I tried the above sample using 1.6.1.8, and it seemed to allow me to delete the contents of a cell whose cellvalue type is double. (Since it was done with 2.0.5.1 originally, you will get a couple of syntax errors when you try to compile it, but I just deleted the 2 lines and that made things work OK for me in 1.6.1.8.)

Does the sample work for you? What are you doing differently?

[Administrator]

OK, I made the test.
It works, but when i enter non-numerical values I get expections. After this I get an message box, which tells me, that I have entered a value which is no double.

But I have solve my problem in an other way now.
Thanks for help.
Barbara
(But if you know, what to do, avoid getting this exception: please let me know)

[Administrator]

Re deleting value from "double" type cell - I tried sample you attached, Clay and found that by using the Delete key and leaving "nothing" in the cell it works fine - but by using the space key to blank it out, you get the invalid type message on leaving.

Is there a way round this as experience tells me that this is the way most users will delete the values ???

Thanks

Jim

[Administrator]

Pressing the delete key is different than typing a space. If you want to ''delete'' an entry when your user types a space, then you will have to handle some event. For example, you could try CurrentCellValidateString and do something there.

private void gridDataBoundGrid1_CurrentCellValidateString(object sender, GridCurrentCellValidateStringEventArgs e)
{
	GridCurrentCell cc = this.gridDataBoundGrid1.CurrentCell;
	if(cc.ColIndex == 2)
	{
		if(e.Text.IndexOf('' '') > -1)
		{
			if(cc.IsEditing)
				cc.Renderer.Control.Text = "";
			else
				this.gridDataBoundGrid1[cc.RowIndex, cc.ColIndex].Text = "";
			e.Cancel = true;
		}
	}
}

[Jim Jackson]

Hi Clay,
I realise the difference between the keys pressed but a normal user doesn''t - they just want to see the required empty cell.

Will that code handle a normal grid as well as a databound grid ? I understand the code but you couldn''t stick the VB version in could you ?

Thanks

Jim

[Administrator]

I think the same code should work in a GridControl.

Private Sub gridDataBoundGrid1_CurrentCellValidateString(sender As Object, e As GridCurrentCellValidateStringEventArgs)
   Dim cc As GridCurrentCell = Me.gridDataBoundGrid1.CurrentCell
   If cc.ColIndex = 2 Then
      If e.Text.IndexOf(" ") > - 1 Then
         If cc.IsEditing Then
            cc.Renderer.Control.Text = ""
         Else
            Me.gridDataBoundGrid1(cc.RowIndex, cc.ColIndex).Text = ""
         End If
         e.Cancel = True
      End If
   End If
End Sub ''gridDataBoundGrid1_CurrentCellValidateString