Datagridview cellvalidating enter dating safety outside
The user is allowed to edit various fields on the datagridview, and I am trying to validiate the date fields before trying to update the database. Jake Jake, I can't get this to work, and I'm very frustrated, so instead of venting my thought on ... Thanks, and maybe tomorrow I'll either "see the light" or have some intelligent questions.I have written this: Private Sub dgv Top_Cell Validating(By Varing()) = False Then Message Box. Cancel = True End If End Select End Sub Which works just fine as far as finding an invalid date, gently alerting the user, and returning the focus to the offending cell. You may be getting an error in your Cell Validating, you might want to check that the value Is Not DBNull. Jake The MCTS: Microsoft Exchange Server 2010 certification validates your skills in supporting the maintenance and administration of the Exchange servers in an enterprise environment. OK, I got it working, but I'm not pleased with my solution.If we do it this way, you will be able to put your data back to the correct datatypes! I didn't include the SQL string because it is quite lengthy (joins 15 tables). Data Member), Currency Manager) But I'm still having the same problem that the only way I can find to look at the data in the current cell is to look at "e.formattedvalue". Jake, The answer to my question is quite simply "Ctrl 0" The root of the problem was if a user entered any data in a cell of the dgv that was not a date, there was no way to get off the cell.Also, I would be grateful to know the correct way to describe exactly what I've done (i.e. ) 'String is created, now load the Data Grid View Dim Tedia Connection String As String = "Data Source='" & Server & "'; Initial Catalog=FSDBB1; Integrated Security=False; User ID=xxxxxx; Pwd=xxxxxx" Dim Tedia Connection As New Sql Client. The data in the Data View does not reflect that is in the current cell, and I can't find a way to set the value of the current cell to DBNull. In my example, if the dgv returned a null in a date cell it would appear as a blank (and properly so).The only problem I am having at the moment is figuring out exactly which cell we're coming from (validating), since the currentcell is the cell we're moving to. Value End If This SHOULD work, but I'm so busy at the moment I haven't tested it... Value But returns an error stating that this is a read-only value.
They are locked into the cell edit behavior until they commit the cell (Enter, Tab) with valid data.
Deleting everything in the cell still does not evaluate to a NULL Thanks ll. Value I put that in a button on the form, and entered some data, and then set the value. ) I changed that and I was able to trap the value properly, but I am unable to set e. So, I re-wrote my test to allow an empty string ("") - something like Is Date(e. Formatted Value) "" But then of course the Data Grid View went crazy because it would not recognize and empty string as a valid date, so I changed my SQL code to cast date fields as Char types to trick the Datagrid View.
The bottom line is that it works, but it's pretty ugly.
You will see this in the programming guide for the barcode scanner and usually involves scanning a few programming barcodes.
This is the most straight forward method as it envolves no software changes.