#918 – Limiting How Much Text a User Can Enter into a TextBox

You can use the MaxLength property of a TextBox to indicate the maximum number of characters that a user is allowed to enter.

In the example below, we limit the hobo name to a max of 10 characters.

    <Grid Margin="5">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto"/>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>

        <Label Content="Enter your hobo name:"/>
        <TextBox Grid.Column="1" MaxLength="10"/>
    </Grid>

918-001
The MaxLength also applies to text that you paste into the TextBox.  The pasted text will be clipped based on the current value of MaxLength.  

By default, MaxLength has a value of 0, which indicates that there is no effective maximum length for text entered or pasted into the control.  (If a user continued entering text indefinitely, the application would eventually run out of memory).

About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

One Response to #918 – Limiting How Much Text a User Can Enter into a TextBox

  1. Pingback: Dew Drop – October 1, 2013 (#1,635) | Morning Dew

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