WPF Validation remove red border on error

WPF  > Validation > Remove red border on error

Validation.ErrorTemplate="{x:Null}

Clear Validation Error On TextBox TextChanged event WPF

WPF > Validation > ClearInvalid

Removes all ValidationError objects from the specified BindingExpression object.

Example

this.TextChanged += TextBox_TextChanged;

void TextBox_TextChanged(object sender, TextChangedEventArgs e)

{

     Validation.ClearInvalid(((TextBox)sender).GetBindingExpression(TextBox.TextProperty));

}

DataGrid WPF show row number

WPF > Controls > ItemsControl > DataGrid > Show row number

XAML

<DataGrid 

        x:Name="dataGrid"

        LoadingRow="dataGrid_LoadingRow"

Code

private void dataGrid_LoadingRow(object sender, DataGridRowEventArgs e)

{

  // show row number

    e.Row.Header = (e.Row.GetIndex() + 1).ToString();

}