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HttpRuntimeSection.MaxRequestLength Property

.NET Framework 4

Gets or sets the maximum request size.

Namespace:  System.Web.Configuration
Assembly:  System.Web (in System.Web.dll)
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[ConfigurationPropertyAttribute("maxRequestLength", DefaultValue = )]
[IntegerValidatorAttribute(MinValue = )]
public int MaxRequestLength { get; set; }

Property Value

Type: System.Int32
The maximum request size in kilobytes. The default size is 4096 KB (4 MB).
Exception Condition
ConfigurationErrorsException

The selected value is less than RequestLengthDiskThreshold.

The MaxRequestLength property specifies the limit for the buffering threshold of the input stream. For example, this limit can be used to prevent denial of service attacks that are caused by users who post large files to the server.

The value assigned to this property should be greater or equal to value assigned to the RequestLengthDiskThreshold property.

The following example shows how to obtain the current MaxRequestLength property value.

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// Get the MaxRequestLength property value.
Response.Write("MaxRequestLength: " +
  configSection.MaxRequestLength + "<br>");

// Set the MaxRequestLength property value to 2048 kilobytes.
configSection.MaxRequestLength = 2048;

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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Page-level setting
I want to allow huge request lengths only for a single page (upload), so that the rest of the site stays better protected from dos attacks.
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