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BaseCompareValidator.Type Property

Gets or sets the data type that the values being compared are converted to before the comparison is made.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)

[ThemeableAttribute(false)] 
public ValidationDataType Type { get; set; }
/** @property */
public ValidationDataType get_Type ()

/** @property */
public void set_Type (ValidationDataType value)

public function get Type () : ValidationDataType

public function set Type (value : ValidationDataType)

Property Value

One of the ValidationDataType enumeration values. The default value is String.

Exception typeCondition

ArgumentException

The specified data type is not one of the ValidationDataType values.

Use the Type property to specify the data type used for comparison. The Type property is used differently by the various comparison validation controls.

NoteImportant:

When the Type property is set to Date and the current calendar type is non-Gregorian, the validator performs server-side validation only. The validator client script supports only Gregorian calendars.

For example, in the RangeValidator control, all values being compared (the upper bound, lower bound, and value of the input control) are converted to the specified data type before any comparison is performed. However, if you use a CompareValidator control and set its Operator property to ValidationCompareOperator.DataTypeCheck, only the value of the input control is converted to the specified data type.

NoteNote

If the value of the input control associated with the validation control cannot be converted to the specified data type, validation fails. The IsValid property of the validation control is set to false.

The following table lists the values that you can use for the Type property.

Data Type

Description

String

Specifies a string data type.

Integer

Specifies a 32-bit signed integer data type.

Double

Specifies a double-precision floating-point number data type.

Date

Specifies a date data type.

Currency

Specifies a monetary data type.

This property cannot be set by themes or style sheet themes. For more information, see ThemeableAttribute and ASP.NET Themes and Skins Overview.

The following code example demonstrates how to use the Type property to specify the data type that the values being compared are converted to before the comparison is made.

<%@ Page Language="C#" AutoEventWireup="True" %>
 
<html>
<head>
   <script runat="server">
 
      void Button_Click(Object sender, EventArgs e) 
      {
 
         if (Page.IsValid) 
         {
            lblOutput.Text = "Result: Valid!";
         }
         else 
         {
            lblOutput.Text = "Result: Not valid!";
         }

      }
 
      void Operator_Index_Changed(Object sender, EventArgs e) 
      {

         Compare1.Operator = (ValidationCompareOperator) ListOperator.SelectedIndex;
         Compare1.Validate();

      }

      void Type_Index_Changed(Object sender, EventArgs e) 
      {

         Compare1.Type = (ValidationDataType) ListType.SelectedIndex;
         Compare1.Validate();

      }
 
   </script>
 
</head>
<body>
 
   <form runat=server>

      <h3>CompareValidator Example</h3>
      <p>
      Enter a value in each textbox. Select a comparison operator<br>
      and data type. Click "Validate" to compare values.
 
      <table bgcolor="#eeeeee" cellpadding=10>

         <tr valign="top">

            <td>

               <h5>String 1:</h5>
               <asp:TextBox id="TextBox1" 
                    runat="server"/>

            </td>

            <td>

               <h5>Comparison Operator:</h5>
 
               <asp:ListBox id="ListOperator" 
                    OnSelectedIndexChanged="Operator_Index_Changed" 
                    runat="server">

                  <asp:ListItem Selected Value="Equal">Equal</asp:ListItem>
                  <asp:ListItem Value="NotEqual">NotEqual</asp:ListItem>
                  <asp:ListItem Value="GreaterThan">GreaterThan</asp:ListItem>
                  <asp:ListItem Value="GreaterThanEqual">GreaterThanEqual</asp:ListItem>
                  <asp:ListItem Value="LessThan">LessThan</asp:ListItem>
                  <asp:ListItem Value="LessThanEqual">LessThanEqual</asp:ListItem>
                  <asp:ListItem Value="DataTypeCheck">DataTypeCheck</asp:ListItem>

               </asp:ListBox>

            </td>

            <td>

               <h5>String 2:</h5>
               <asp:TextBox id="TextBox2" 
                    runat="server"/>
               <p>
               <asp:Button id="Button1"
                    Text="Validate"  
                    OnClick="Button_Click" 
                    runat="server"/>

            </td>
         </tr>

         <tr>
            <td colspan="3" align="center">

               <h5>Data Type:</h5>

               <asp:ListBox id="ListType" 
                    OnSelectedIndexChanged="Type_Index_Changed" 
                    runat="server">

                  <asp:ListItem Selected Value="String" >String</asp:ListItem>
                  <asp:ListItem Value="Integer" >Integer</asp:ListItem>
                  <asp:ListItem Value="Double" >Double</asp:ListItem>
                  <asp:ListItem Value="Date" >Date</asp:ListItem>
                  <asp:ListItem Value="Currency" >Currency</asp:ListItem>

               </asp:ListBox>
            </td>
         </tr>
      </table>
 
      <asp:CompareValidator id="Compare1" 
           ControlToValidate="TextBox1" 
           ControlToCompare="TextBox2"
           EnableClientScript="False" 
           Type="String" 
           runat="server"/>
 
      <br>
       
      <asp:Label id="lblOutput" 
           Font-Name="verdana" 
           Font-Size="10pt" 
           runat="server"/>
 
   </form>
 
</body>
</html>


Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

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