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ValidationConstraints.xml
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ValidationConstraints.xml
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<Type Name="ValidationConstraints" FullName="System.Windows.Forms.ValidationConstraints">
<TypeSignature Language="C#" Value="public enum ValidationConstraints" />
<TypeSignature Language="ILAsm" Value=".class public auto ansi sealed ValidationConstraints extends System.Enum" />
<TypeSignature Language="DocId" Value="T:System.Windows.Forms.ValidationConstraints" />
<TypeSignature Language="VB.NET" Value="Public Enum ValidationConstraints" />
<TypeSignature Language="F#" Value="type ValidationConstraints = " />
<TypeSignature Language="C++ CLI" Value="public enum class ValidationConstraints" />
<AssemblyInfo>
<AssemblyName>System.Windows.Forms</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Base>
<BaseTypeName>System.Enum</BaseTypeName>
</Base>
<Attributes>
<Attribute>
<AttributeName Language="C#">[System.Flags]</AttributeName>
<AttributeName Language="F#">[<System.Flags>]</AttributeName>
</Attribute>
</Attributes>
<Docs>
<summary>Defines constants that inform <see cref="M:System.Windows.Forms.ContainerControl.ValidateChildren(System.Windows.Forms.ValidationConstraints)" /> about how it should validate a container's child controls.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
By default, <xref:System.Windows.Forms.ContainerControl.ValidateChildren%2A> will validate all enabled controls in a container, such as a form. Use this enumeration to restrict the types of controls whose <xref:System.Windows.Forms.Control.Validating> event is raised.
You can combine these enumerated values together with a bitwise OR operation. Combining parameters with a bitwise OR operator will result in a logical AND operation. For example, calling `ValidateChildren(ValidationConstraints.ImmediateChildren | ValidationConstraints.Enabled)` will only raise the <xref:System.Windows.Forms.Control.Validating> event on controls that are both immediate children of the container AND are enabled.
If you do not specify ImmediateChildren when you call <xref:System.Windows.Forms.ContainerControl.ValidateChildren%2A>, the method will require that you validate all child controls in the control hierarchy.
## Examples
The following code example will only cause the <xref:System.Windows.Forms.Control.Validating> event to be raised for immediate children of the form whose <xref:System.Windows.Forms.Control.Enabled%2A> property is `true`.
:::code language="csharp" source="~/snippets/csharp/System.Windows.Forms/ContainerControl/ValidateChildren/Form1.cs" id="Snippet1":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_Winforms/ValidateChildrenWithConstraints/VB/Form1.vb" id="Snippet1":::
]]></format>
</remarks>
<related type="Article" href="/dotnet/desktop/winforms/user-input-validation-in-windows-forms?view=netframeworkdesktop-4.8">User Input Validation in Windows Forms (Windows Forms)</related>
</Docs>
<Members>
<Member MemberName="Enabled">
<MemberSignature Language="C#" Value="Enabled" />
<MemberSignature Language="ILAsm" Value=".field public static literal valuetype System.Windows.Forms.ValidationConstraints Enabled = int32(2)" />
<MemberSignature Language="DocId" Value="F:System.Windows.Forms.ValidationConstraints.Enabled" />
<MemberSignature Language="VB.NET" Value="Enabled" />
<MemberSignature Language="F#" Value="Enabled = 2" Usage="System.Windows.Forms.ValidationConstraints.Enabled" />
<MemberSignature Language="C++ CLI" Value="Enabled" />
<MemberType>Field</MemberType>
<AssemblyInfo>
<AssemblyName>System.Windows.Forms</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Windows.Forms.ValidationConstraints</ReturnType>
</ReturnValue>
<MemberValue>2</MemberValue>
<Docs>
<summary>Validates child controls whose <see cref="P:System.Windows.Forms.Control.Enabled" /> property is set to <see langword="true" />.</summary>
</Docs>
</Member>
<Member MemberName="ImmediateChildren">
<MemberSignature Language="C#" Value="ImmediateChildren" />
<MemberSignature Language="ILAsm" Value=".field public static literal valuetype System.Windows.Forms.ValidationConstraints ImmediateChildren = int32(16)" />
<MemberSignature Language="DocId" Value="F:System.Windows.Forms.ValidationConstraints.ImmediateChildren" />
<MemberSignature Language="VB.NET" Value="ImmediateChildren" />
<MemberSignature Language="F#" Value="ImmediateChildren = 16" Usage="System.Windows.Forms.ValidationConstraints.ImmediateChildren" />
<MemberSignature Language="C++ CLI" Value="ImmediateChildren" />
<MemberType>Field</MemberType>
<AssemblyInfo>
<AssemblyName>System.Windows.Forms</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Windows.Forms.ValidationConstraints</ReturnType>
</ReturnValue>
<MemberValue>16</MemberValue>
<Docs>
<summary>Validates child controls that are directly hosted within the container. Does not validate any of the children of these children. For example, if you have a <see cref="T:System.Windows.Forms.Form" /> that contains a custom <see cref="T:System.Windows.Forms.UserControl" />, and the <see cref="T:System.Windows.Forms.UserControl" /> contains a <see cref="T:System.Windows.Forms.Button" />, using <see cref="F:System.Windows.Forms.ValidationConstraints.ImmediateChildren" /> will cause the <see cref="E:System.Windows.Forms.Control.Validating" /> event of the <see cref="T:System.Windows.Forms.UserControl" /> to occur, but not the <see cref="E:System.Windows.Forms.Control.Validating" /> event of the <see cref="T:System.Windows.Forms.Button" />.</summary>
</Docs>
</Member>
<Member MemberName="None">
<MemberSignature Language="C#" Value="None" />
<MemberSignature Language="ILAsm" Value=".field public static literal valuetype System.Windows.Forms.ValidationConstraints None = int32(0)" />
<MemberSignature Language="DocId" Value="F:System.Windows.Forms.ValidationConstraints.None" />
<MemberSignature Language="VB.NET" Value="None" />
<MemberSignature Language="F#" Value="None = 0" Usage="System.Windows.Forms.ValidationConstraints.None" />
<MemberSignature Language="C++ CLI" Value="None" />
<MemberType>Field</MemberType>
<AssemblyInfo>
<AssemblyName>System.Windows.Forms</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Windows.Forms.ValidationConstraints</ReturnType>
</ReturnValue>
<MemberValue>0</MemberValue>
<Docs>
<summary>Validates all child controls, and all children of these child controls, regardless of their property settings.</summary>
</Docs>
</Member>
<Member MemberName="Selectable">
<MemberSignature Language="C#" Value="Selectable" />
<MemberSignature Language="ILAsm" Value=".field public static literal valuetype System.Windows.Forms.ValidationConstraints Selectable = int32(1)" />
<MemberSignature Language="DocId" Value="F:System.Windows.Forms.ValidationConstraints.Selectable" />
<MemberSignature Language="VB.NET" Value="Selectable" />
<MemberSignature Language="F#" Value="Selectable = 1" Usage="System.Windows.Forms.ValidationConstraints.Selectable" />
<MemberSignature Language="C++ CLI" Value="Selectable" />
<MemberType>Field</MemberType>
<AssemblyInfo>
<AssemblyName>System.Windows.Forms</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Windows.Forms.ValidationConstraints</ReturnType>
</ReturnValue>
<MemberValue>1</MemberValue>
<Docs>
<summary>Validates child controls that can be selected.</summary>
</Docs>
</Member>
<Member MemberName="TabStop">
<MemberSignature Language="C#" Value="TabStop" />
<MemberSignature Language="ILAsm" Value=".field public static literal valuetype System.Windows.Forms.ValidationConstraints TabStop = int32(8)" />
<MemberSignature Language="DocId" Value="F:System.Windows.Forms.ValidationConstraints.TabStop" />
<MemberSignature Language="VB.NET" Value="TabStop" />
<MemberSignature Language="F#" Value="TabStop = 8" Usage="System.Windows.Forms.ValidationConstraints.TabStop" />
<MemberSignature Language="C++ CLI" Value="TabStop" />
<MemberType>Field</MemberType>
<AssemblyInfo>
<AssemblyName>System.Windows.Forms</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Windows.Forms.ValidationConstraints</ReturnType>
</ReturnValue>
<MemberValue>8</MemberValue>
<Docs>
<summary>Validates child controls that have a <see cref="P:System.Windows.Forms.Control.TabStop" /> value set, which means that the user can navigate to the control using the TAB key.</summary>
</Docs>
</Member>
<Member MemberName="Visible">
<MemberSignature Language="C#" Value="Visible" />
<MemberSignature Language="ILAsm" Value=".field public static literal valuetype System.Windows.Forms.ValidationConstraints Visible = int32(4)" />
<MemberSignature Language="DocId" Value="F:System.Windows.Forms.ValidationConstraints.Visible" />
<MemberSignature Language="VB.NET" Value="Visible" />
<MemberSignature Language="F#" Value="Visible = 4" Usage="System.Windows.Forms.ValidationConstraints.Visible" />
<MemberSignature Language="C++ CLI" Value="Visible" />
<MemberType>Field</MemberType>
<AssemblyInfo>
<AssemblyName>System.Windows.Forms</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Windows.Forms.ValidationConstraints</ReturnType>
</ReturnValue>
<MemberValue>4</MemberValue>
<Docs>
<summary>Validates child controls whose <see cref="P:System.Windows.Forms.Control.Visible" /> property is set to <see langword="true" />.</summary>
</Docs>
</Member>
</Members>
</Type>