HtmlForm.Enctype Property
Gets or sets the encoding type a browser uses when posting the form's data to the server.
Assembly: System.Web (in System.Web.dll)
Property Value
Type: System.StringA string that contains the encoding type. The default value is an empty string (""), indicating that the browser's default content type is used.
Use the Enctype property to specify the encoding type a browser uses to post data back to the server.
The following table shows the common encoding types.
Encoding type | Description |
|---|---|
application/x-www-form-urlencoded | Form data is encoded as name/value pairs. This is the standard encoding format. |
multipart/form-data | Form data is encoded as a message with a separate part for each control on the page. |
text/plain | Form data is encoded in plain text, without any control or formatting characters. |
For more information on encoding types, see the World Wide Web Consortium (W3C Web site.
The following code example demonstrates how to use the Enctype property to specify the encoding type the browser uses to send data back to the server.
<%@ Page Language="VB" AutoEventWireup="True" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server"> Protected Sub AddButton_Click(ByVal sender As Object, ByVal e As EventArgs) Dim Answer As Integer ' Calculate and display the result. Answer = Convert.ToInt32(Value1.Value) + Convert.ToInt32(Value2.Value) AnswerMessage.InnerHtml = Answer.ToString() End Sub </script> <html xmlns="http://www.w3.org/1999/xhtml" > <head> <title>HtmlForm Example</title> </head> <body> <form method="Post" enctype="application/x-www-form-urlencoded" runat="server" id="myform"> <h3> HtmlForm Example </h3> <table> <tr> <td colspan="5"> Enter integer values into the text boxes. <br /> Click the Add button to add the two values. <br /> Click the Reset button to reset the text boxes. </td> </tr> <tr> <td colspan="5"> </td> </tr> <tr align="center"> <td> <input id="Value1" type="Text" size="2" maxlength="3" value="1" runat="server"/> </td> <td> + </td> <td> <input id="Value2" type="Text" size="2" maxlength="3" value="1" runat="server"/> </td> <td> = </td> <td> <span id="AnswerMessage" runat="server"/> </td> </tr> <tr> <td colspan="2"> <asp:RequiredFieldValidator ID="Value1RequiredValidator" ControlToValidate="Value1" ErrorMessage="Please enter a value.<br />" Display="Dynamic" runat="server"/> <asp:CompareValidator ID="Value1MinCompareValidator" ControlToValidate="Value1" Operator="LessThan" Type="Integer" ValueToCompare="100" ErrorMessage="Please enter an integer less than 100.<br />" Display="Dynamic" runat="server"/> <asp:CompareValidator ID="Value1MaxCompareValidator" ControlToValidate="Value1" Operator="GreaterThan" Type="Integer" ValueToCompare="0" ErrorMessage="Please enter an integer greater than 0.<br />" Display="Dynamic" runat="server"/> </td> <td colspan="2"> <asp:RequiredFieldValidator ID="Value2RequiredValidator" ControlToValidate="Value2" ErrorMessage="Please enter a value.<br />" Display="Dynamic" runat="server"/> <asp:CompareValidator ID="Value2MinCompareValidator" ControlToValidate="Value2" Operator="LessThan" Type="Integer" ValueToCompare="100" ErrorMessage="Please enter an integer less than 100.<br />" Display="Dynamic" runat="server"/> <asp:CompareValidator ID="Value2MaxCompareValidator" ControlToValidate="Value2" Operator="GreaterThan" Type="Integer" ValueToCompare="0" ErrorMessage="Please enter an integer greater than 0.<br />" Display="Dynamic" runat="server"/> </td> <td> </td> </tr> <tr align="center"> <td colspan="4"> <input type="Submit" name="AddButton" value="Add" onserverclick="AddButton_Click" runat="server"/> <input type="Reset" name="AddButton" value="Reset" runat="server"/> </td> <td> </td> </tr> </table> </form> </body> </html>
Available since 1.1