Validation in DataGrid ?

[Arsalan]

How do I validate inputs in DataGrid ? I want to check for constraint and
change columns value dynamically,

for e.g i've column named employee, annual salary and salary

I want the columns annual salary to be dynamically changed when user changes
salary in datagrid

How do I do it?

[Michael C#]

I've done something similar with the DataGrid's .CurrentCellCha nged event.
It might look something like this:

Private Sub dgPayroll_Curre ntCellChanged(B yVal sender As Object, ByVal e As
System.EventArg s) Handles dgPayroll.Curre ntCellChanged
' This routine automatically calculates the Yearly Salary based on the
' Monthly Pay amounts entered

' First we locate our current edited cell and get the row
Dim curGrid As DataGrid = CType(sender, DataGrid)
Dim curRow As Integer = curGrid.Current Cell.RowNumber

' Then we get the gross pay and withholding from that row and
' calculate the net pay. We put it in a try..catch block to catch
' null values.

Try
' Assumes Monthly Pay is entered in column 1
' and Yearly Salary goes into column 2
Dim mothlyPay As Single = Convert.ToSingl e(curGrid.Item( curRow, 1))
curGrid.Item(cu rRow, 2) = monthlyPay * 12.0
Catch
End Try
End Sub

"Arsalan" <ar***********@ hotmail.com> wrote in message
news:%2******** *******@TK2MSFT NGP15.phx.gbl.. .

How do I validate inputs in DataGrid ? I want to check for constraint and
change columns value dynamically,

for e.g i've column named employee, annual salary and salary

I want the columns annual salary to be dynamically changed when user
changes salary in datagrid

How do I do it?

[Ken Tucker [MVP]]

Hi,

First add a tablestyle to the datagrid then I would add a handler to
the datagridtextbox columns textbox validating event.

Add Tablestyle
http://msdn.microsoft.com/library/de...asicprimer.asp

http://msdn.microsoft.com/library/de...stdatagrid.asp

Add a handler to the textbox validating event
Dim colDescription As New DatagridTextbox column

With colDescription

..MappingName = "Notes"

..HeaderText = "Notes"

..Width = 350

End With

AddHandler colDescription. TextBox.Validat ing, AddressOf CellValidating

Private Sub CellValidating( ByVal sender As Object, ByVal e As
System.Componen tModel.CancelEv entArgs)

Debug.WriteLine (DirectCast(sen der, DataGridTextBox ).Text)

End Sub
Ken

------------------------
"Arsalan" <ar***********@ hotmail.com> wrote in message
news:%2******** *******@TK2MSFT NGP15.phx.gbl.. .
How do I validate inputs in DataGrid ? I want to check for constraint and
change columns value dynamically,

for e.g i've column named employee, annual salary and salary

I want the columns annual salary to be dynamically changed when user changes
salary in datagrid

How do I do it?

[Michael C#]

I tell you, I learn something new every time I visit this board! :) Just
one question - how can you update the yearly salary cell on the same row to
reflect the re-calculated salary?

Thanks!

"Ken Tucker [MVP]" <vb***@bellsout h.net> wrote in message
news:O2******** ******@TK2MSFTN GP09.phx.gbl...

Hi,

First add a tablestyle to the datagrid then I would add a handler to
the datagridtextbox columns textbox validating event.

Add Tablestyle
http://msdn.microsoft.com/library/de...asicprimer.asp

http://msdn.microsoft.com/library/de...stdatagrid.asp

Add a handler to the textbox validating event
Dim colDescription As New DatagridTextbox column

With colDescription

.MappingName = "Notes"

.HeaderText = "Notes"

.Width = 350

End With

AddHandler colDescription. TextBox.Validat ing, AddressOf CellValidating

Private Sub CellValidating( ByVal sender As Object, ByVal e As
System.Componen tModel.CancelEv entArgs)

Debug.WriteLine (DirectCast(sen der, DataGridTextBox ).Text)

End Sub
Ken

------------------------
"Arsalan" <ar***********@ hotmail.com> wrote in message
news:%2******** *******@TK2MSFT NGP15.phx.gbl.. .
How do I validate inputs in DataGrid ? I want to check for constraint and
change columns value dynamically,

for e.g i've column named employee, annual salary and salary

I want the columns annual salary to be dynamically changed when user
changes
salary in datagrid

How do I do it?