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<?xml version="1.0" encoding="utf-8"?>
<Type Name="RequiredFieldValidator" FullName="System.Web.UI.WebControls.RequiredFieldValidator">
<TypeSignature Language="C#" Maintainer="auto" Value="public class RequiredFieldValidator : System.Web.UI.WebControls.BaseValidator" />
<AssemblyInfo>
<AssemblyName>System.Web</AssemblyName>
<AssemblyPublicKey>
</AssemblyPublicKey>
<AssemblyVersion>1.0.5000.0</AssemblyVersion>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ThreadSafetyStatement>Gtk# is thread aware, but not thread safe; See the <link location="node:gtk-sharp/programming/threads">Gtk# Thread Programming</link> for details.</ThreadSafetyStatement>
<Base>
<BaseTypeName>System.Web.UI.WebControls.BaseValidator</BaseTypeName>
</Base>
<Interfaces>
</Interfaces>
<Attributes>
<Attribute>
<AttributeName>System.Web.UI.ToolboxData("<{0}:RequiredFieldValidator runat="server" ErrorMessage="RequiredFieldValidator"></{0}:RequiredFieldValidator>")</AttributeName>
</Attribute>
</Attributes>
<Docs>
<remarks>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Use this control to make an input control a required field. The input control fails validation if its value does not change from the <see cref="P:System.Web.UI.WebControls.RequiredFieldValidator.InitialValue" /> property upon losing focus.</para>
<para>Multiple validators can be associated with the same input control. For example, a <see cref="T:System.Web.UI.WebControls.RequiredFieldValidator" /> can be used to ensure input to a control, while at the same time a <see cref="T:System.Web.UI.WebControls.RangeValidator" /> can be used to ensure that the input is within a specified data range.</para>
<block subset="none" type="note">
<para>When you use the <see cref="T:System.Web.UI.WebControls.RequiredFieldValidator" /> control inside an <see cref="T:System.Web.UI.UpdatePanel" /> control, make sure that the validator control and the control it is associated with are in the same panel. For more information about using the <see cref="T:System.Web.UI.UpdatePanel" /> control for partial-page updates, see <format type="text/html"><a href="5c12736d-d9e9-464a-9388-3fe0f9f49e49">Partial-Page Rendering Overview</a></format>.</para>
</block>
<para>For additional information on validation controls, see <see cref="T:System.Web.UI.WebControls.BaseValidator" />.</para>
<format type="text/html">
<h2>Accessibility</h2>
</format>
<para>For information about how to configure this control so that it generates markup that conforms to accessibility standards, see <format type="text/html"><a href="7e3ce9c4-6b7d-4fb1-94b5-72cf2a44fe13">Accessibility in Visual Studio 2010 and ASP.NET 4</a></format> and <format type="text/html"><a href="847a37e3-ce20-41da-b0d3-7dfb0fdae9a0">ASP.NET Controls and Accessibility</a></format>.</para>
</remarks>
<summary>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Makes the associated input control a required field.</para>
</summary>
</Docs>
<Members>
<Member MemberName=".ctor">
<MemberSignature Language="C#" Value="public RequiredFieldValidator ();" />
<MemberType>Constructor</MemberType>
<ReturnValue />
<Parameters />
<Docs>
<remarks>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Use this constructor to create and initialize a new instance of the <see cref="T:System.Web.UI.WebControls.RequiredFieldValidator" /> class.</para>
</remarks>
<summary>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Initializes a new instance of <see cref="T:System.Web.UI.WebControls.RequiredFieldValidator" /> class.</para>
</summary>
</Docs>
<AssemblyInfo>
<AssemblyVersion>1.0.5000.0</AssemblyVersion>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
</AssemblyInfo>
</Member>
<Member MemberName="AddAttributesToRender">
<MemberSignature Language="C#" Value="protected override void AddAttributesToRender (System.Web.UI.HtmlTextWriter w);" />
<MemberType>Method</MemberType>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="w" Type="System.Web.UI.HtmlTextWriter" />
</Parameters>
<Docs>
<param name="w">a <see cref="T:System.Web.UI.HtmlTextWriter" /></param>
<remarks>To be added</remarks>
<summary>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Adds the HTML attributes and styles that need to be rendered for the control to the specified <see cref="T:System.Web.UI.HtmlTextWriter" /> object.</para>
</summary>
</Docs>
<AssemblyInfo>
<AssemblyVersion>1.0.5000.0</AssemblyVersion>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
</AssemblyInfo>
</Member>
<Member MemberName="EvaluateIsValid">
<MemberSignature Language="C#" Value="protected override bool EvaluateIsValid ();" />
<MemberType>Method</MemberType>
<ReturnValue>
<ReturnType>System.Boolean</ReturnType>
</ReturnValue>
<Parameters />
<Docs>
<remarks>To be added</remarks>
<summary>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Called during the validation stage when ASP.NET processes a Web Form.</para>
</summary>
<returns>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>true if the value in the input control is valid; otherwise, false.</para>
</returns>
</Docs>
<AssemblyInfo>
<AssemblyVersion>1.0.5000.0</AssemblyVersion>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
</AssemblyInfo>
</Member>
<Member MemberName="InitialValue">
<MemberSignature Language="C#" Value="public string InitialValue { set; get; }" />
<MemberType>Property</MemberType>
<ReturnValue>
<ReturnType>System.String</ReturnType>
</ReturnValue>
<Parameters />
<Docs>
<value>To be added: an object of type 'string'</value>
<remarks>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Use this property to specify the initial value of the input control.</para>
<para>Validation fails only if the value of the associated input control matches this <see cref="P:System.Web.UI.WebControls.RequiredFieldValidator.InitialValue" /> upon losing focus.</para>
<block subset="none" type="note">
<para>The strings in both the <see cref="P:System.Web.UI.WebControls.RequiredFieldValidator.InitialValue" /> property and the input control are trimmed to remove extra spaces before and after the string before validation is performed.</para>
</block>
<para>This property cannot be set by themes or style sheet themes. For more information, see <see cref="T:System.Web.UI.ThemeableAttribute" /> and <format type="text/html"><a href="5df3ebbd-d46c-4502-9406-02f9df4ef2c3">ASP.NET Themes Overview</a></format>.</para>
</remarks>
<summary>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Gets or sets the initial value of the associated input control.</para>
</summary>
</Docs>
<AssemblyInfo>
<AssemblyVersion>1.0.5000.0</AssemblyVersion>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute>
<AttributeName>System.ComponentModel.DefaultValue("")</AttributeName>
</Attribute>
<Attribute>
<AttributeName>System.Web.UI.Themeable(false)</AttributeName>
</Attribute>
</Attributes>
</Member>
</Members>
</Type>
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