Errorprovider visual basic not working4/12/2023 ![]() StrCriteria = e.Column.ColumnName & "='" & e.ProposedValue.ToString & "'"Į.Row.SetColumnError("compclass", "ColumnError: Duplicated value, each value must be unique")Į.Row. An error can be associated with an editor as follows: directly via the DXErrorProvider.SetError method. The ColumnChanging event: Private Sub ref_compclassDataTableColumnChanging(ByVal sender As System.Object, ByVal e As ) Handles Me.ColumnChangingĭim rccTA As New ref_compclassTableAdapter The Binding Source for the DGV points at a single table in the DataSet (which hooks up to an underlying Access DB).Į.Row.SetColumnError("compclass", "Component Class must be less than 25 characters") En el caso del control ErrorProvider, muestra un icono de error junto al control relevante. If you can reproduce it in that new project, log a bug report. ![]() I have been trying ErrorProvider and I can get it to check for a required feild, but not then check the same textbox for the regex. If the string is not empty, the error provider is set to display nothing this disables the error provider as applied to that control. If this is not what you are seeing, try creating a new, minimal project to reproduce the problem, to verify that there is not something else in your code that is causing the problem. I would like to validate a text box on a windows form in VB.Net to check first that the required field has a value and then check to make sure it matches the RegEx. ![]() ![]() Code: Private Sub Button1Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click If TextBox1. If the string length is zero, the error icon is hidden. I have an ErrorProvider on a form with a DataGridView. Lo que te está causando el 'Error' es porque en tu comparación estas indicando que si tu index 0 entonces No muestre el error, de caso contrario lo debe mostrar. Drag and drop ErrorProvider and TextBox control from toolbox on the window Form. ![]()
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