# C1.WPF.Input.C1MaskedTextBox.Mask

## Content

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<h1 id="C1_WPF_Input_C1MaskedTextBox_Mask_" data-uid="C1.WPF.Input.C1MaskedTextBox.Mask*">Mask Property
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<a id="C1_WPF_Input_C1MaskedTextBox_Mask_" data-uid="C1.WPF.Input.C1MaskedTextBox.Mask*"></a>
<h4 id="C1_WPF_Input_C1MaskedTextBox_Mask" data-uid="C1.WPF.Input.C1MaskedTextBox.Mask">Mask</h4>
<div class="markdown level1 summary"><p>Gets or sets the input mask.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public string Mask { get; set; }</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Property Mask As String</code></pre>
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<h5 id="C1_WPF_Input_C1MaskedTextBox_Mask_remarks">Remarks</h5>
<div class="markdown level1 remarks"><p>The mask consists of a string that determines what class of character is acceptable at each input position.</p>
<p>Valid mask characters are:</p>
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              <b>0</b> Digit (0-9)</p>
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              <b>9</b> Digit or space</p>
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              <b>#</b> Digit, space, or sign (+/-)</p>
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              <b>L</b> Letter</p>
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              <b>?</b> Letter or space</p>
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              <b>A</b> Letter or digit</p>
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              <b>a</b> Letter, digit, or space</p>
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              <b>&amp;</b>Any character</p>
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              <b>.</b> Localized decimal symbol</p>
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              <b>,</b> Localized thousand separator</p>
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              <b>:</b> Localized time separator</p>
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              <b>/</b> Localized date separator</p>
<p>Other characters are treated as literals.They are displayed in the control but cannotbe edited.</p>
<p>For example, the mask "000-0000" causes the control to accept only digits at every position except the third, which always contains a dash.</p>
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