45 lines
1.7 KiB
C#
45 lines
1.7 KiB
C#
namespace System.Web.Mvc {
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using System;
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public static class HttpRequestExtensions {
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internal const string XHttpMethodOverrideKey = "X-HTTP-Method-Override";
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public static string GetHttpMethodOverride(this HttpRequestBase request) {
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if (request == null) {
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throw new ArgumentNullException("request");
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}
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string incomingVerb = request.HttpMethod;
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if (!String.Equals(incomingVerb, "POST", StringComparison.OrdinalIgnoreCase)) {
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return incomingVerb;
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}
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string verbOverride = null;
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string headerOverrideValue = request.Headers[XHttpMethodOverrideKey];
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if (!String.IsNullOrEmpty(headerOverrideValue)) {
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verbOverride = headerOverrideValue;
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}
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else {
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string formOverrideValue = request.Form[XHttpMethodOverrideKey];
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if (!String.IsNullOrEmpty(formOverrideValue)) {
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verbOverride = formOverrideValue;
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}
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else {
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string queryStringOverrideValue = request.QueryString[XHttpMethodOverrideKey];
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if (!String.IsNullOrEmpty(queryStringOverrideValue)) {
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verbOverride = queryStringOverrideValue;
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}
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}
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}
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if (verbOverride != null) {
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if (!String.Equals(verbOverride, "GET", StringComparison.OrdinalIgnoreCase) &&
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!String.Equals(verbOverride, "POST", StringComparison.OrdinalIgnoreCase)) {
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incomingVerb = verbOverride;
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}
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}
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return incomingVerb;
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}
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}
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}
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