15-Dec-2019 20:28 by 7 Comments


You can validate data by handling the Cell Validating event, which is raised by the Data Grid View when the current cell changes.

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Its not permissible to have the two selected to true, but they can both be false.

I wrote code in the cellvalidating event as follows. Data Grid View Cell Validating Eve nt Args) Handles Datagrid1.

A: If you want take input directly in datagridview, column of string type takes any input but Data Grid View default error dialog is shown when making invalid input i-e 123a for integer type column that asks to handle the Data Error event of datagridview . Data Grid View Cell Validating Event Args) Handles Data Grid View1.

So you can use Cell Validating event of Data Grid View to validate integer type column as well as other. Cell Validating Dim cell As Data Grid View Cell = Data Grid View1.

In a datagridview (vs2005, VB.net) I have two columns that are checkboxes.

I need to check that only one of the two can be checked.

NET framework "Parse" exception message, which I guess you call to determine if the value is correct.

Do you know a way to allow both dot and comma as a decimal separator ? Regards, Mickaël Derriey Hi Mickaël, Let me try to explain how number work in the . Numbers are internally represented in the same way in the memory no matter which culture you use. But the important thing is that once the string is parsed regardless of the culture, the actual Decimal value that is obtained has the same byte representation in memory. NET Framework does not offer the functionality that you require out-of-the-box, you will have to develop your own code to handle the two different decimal separators.

Our Bulgarian decimal separator is the same as yours, i.e. One possible way to do this would be to create a custom cell editor, that will be some kind of a smart Text Box, which will accepts numbers typed with a comma and with a dot and regardless of the symbol used convert them to the desired decimal value.

Here you can learn more about creating custom cell editors.

Text = "Data Grid View validation demo (disallows empty Company Name)" End Sub Private Sub Form1_Load(By Val sender As System. All Cells Except Header) End Sub Private Sub data Grid View1_Cell Validating(By Val sender As Object, _ By Val e As Data Grid View Cell Validating Event Args) _ Handles data Grid View1. Header Text ' Abort validation if cell is not in the Company Name column. Equals("Company Name") Then Return ' Confirm that the cell is not empty.

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