76 lines
2.6 KiB
C#
76 lines
2.6 KiB
C#
using System.Collections.Generic;
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using System.Collections.Specialized;
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using System.Globalization;
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using System.Text;
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using System.Web.Resources;
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namespace System.Web.DynamicData {
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internal static class QueryStringHandler {
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public static string AddFiltersToPath(string virtualPath, IDictionary<string, object> filters) {
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if (String.IsNullOrEmpty(virtualPath))
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throw new ArgumentException(
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String.Format(CultureInfo.CurrentCulture, DynamicDataResources.QueryStringHandler_VirtualPathCannotBeEmpty),
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"virtualPath");
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if (filters == null)
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throw new ArgumentNullException("filters");
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string queryString = ConcatenateQueryStringElements(filters);
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if (String.IsNullOrEmpty(queryString))
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return virtualPath;
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StringBuilder result = new StringBuilder(virtualPath);
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if (!virtualPath.Contains("?")) {
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result.Append('?');
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}
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else {
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if (!virtualPath.EndsWith("?", StringComparison.Ordinal) && !virtualPath.EndsWith("&", StringComparison.Ordinal)) {
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result.Append('&');
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}
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}
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result.Append(queryString);
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return result.ToString();
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}
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private static string ConcatenateQueryStringElements(IDictionary<string, object> parameters) {
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if (parameters.Count == 0) {
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return String.Empty;
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}
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StringBuilder result = new StringBuilder();
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bool firstParam = true;
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foreach (String s in parameters.Keys) {
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if (!String.IsNullOrEmpty(s)) {
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string key = SanitizeParameterComponent(s);
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string value = SanitizeParameterComponent(parameters[s]);
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if (firstParam)
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firstParam = false;
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else
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result.Append('&');
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result.Append(key);
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result.Append('=');
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result.Append(value);
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}
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}
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return result.ToString();
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}
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private static string SanitizeParameterComponent(object value) {
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if (value == null)
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return String.Empty;
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string strValue = value.ToString();
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// Trim trailing spaces, as they are typically meaningless, and make the url look ugly
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strValue = strValue.TrimEnd();
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return Uri.EscapeDataString(strValue);
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}
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}
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}
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