Posts by Paulo Antunes de Souza • 13 points

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  Q: Do not let insert same value in a Datagridview C#

  I own a DataGridView where I have a column called Ramal, where the specific seller’s extension will go. How to do that when I type in a line an existing extension, appear a message that cannot be…

  c# winforms

  asked 4 years ago Paulo Antunes de Souza 13