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how to minimum text length in textbox in c# Code Example
how to minimum text length in textbox in c# 
private void TextBox_LostFocus(object sender, RoutedEventArgs e)
{
    if (((TextBox)sender).Text.Length < 5)
    {
        MessageBox.Show("You need to write at least 5 characters");
    }
}
Source: stackoverflow.com



Csharp

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