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VB 2008 - Validate datagridview DATE entry

Posted on 2009-07-04
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Last Modified: 2012-05-07
User is allowed to use long or short date entry method for a Datagridview field.  The entry has to pass CellValidating.

I do not know how to test for a valid date entry.  User can enter long or short date - but it has to be valid.
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Question by:ljcor
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6 Comments
 
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Expert Comment

by:Wayne Taylor (webtubbs)
ID: 24776465
How are you populating the DataGridView?

Wayne
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Wayne Taylor (webtubbs) earned 500 total points
ID: 24776469
If you are setting the DataSource, if the DataType of your date column is Date, a message will inform the user of an incorrect date format.

See the below example.


Wayne
Public Class Form1 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 
        Dim dt As New DataTable
        dt.Columns.Add("Number")
        dt.Columns.Add("Date", GetType(Date)) 
        DataGridView1.DataSource = dt 
    End Sub 
    Private Sub DataGridView1_DataError(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewDataErrorEventArgs) Handles DataGridView1.DataError
        MsgBox(e.Exception.Message)
    End Sub 
End Class

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by:Wayne Taylor (webtubbs)
ID: 24776475
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Expert Comment

by:meispisces
ID: 24776600
Whats cell validating? Could you please explain to us


thanks
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Author Comment

by:ljcor
ID: 24776883
Sorry I disappeared: this Southern California guy posted the question and then fell asleep.  Very sorry.

The grid is being populated by user data entry.

"cell validating" is the use of the Datagrid1_CellValidating event.
 
My question now: at what point in the sequence is the CellParsing event called?  Before or after the CellValidating event?
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Author Closing Comment

by:ljcor
ID: 31599745
Thanks much, Wayne
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