Cellvalidating not

31-Jan-2019 10:32

Steps: Private Sub Data Grid View1_Cell Validating(By Val sender As System. Is In Edit Mode Then Dim c As Control = Data Grid View1. dim my Data Table as Data Table dim tmp Str as String dim s ID as Integer = 1 ... Get Data() ' Reads the data from MS-Access table ... Rows tmp Str = name Item("lastname") " " name Item("initials") If my Item("s ID")=s ID Then ' Do something End If ' print tmp Str Next Microsoft came up with DBNull in . However, it's a pain in the behind to use because you can't create a strongly-typed variable to store a genuine value or null. Just a suggestion, but what I normally do is this: While reader. Add(New DDLItem( _ CType(reader("rid"), Integer), _ CType(reader("Item_Status"), String), _ CType(reader("Text_Show"), String), _ CType( IIf(Is DBNull(reader("Text_Use")), "", reader("Text_Use")) , String), _ CType(reader("Text_System Only"), String), _ CType(reader("Parent_rid"), Integer))) End While VB. However, you are still stuck with large chunks of API that use DBNull, and they can't be changed.

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In the Cell End Edit event handler, set the Error Text property on the row to the empty string.

When you bind to a data source that contains multiple lists or tables, set the Data Member property to a string that specifies the list or table to bind to.