Parse through POST
-
09-07-2021 - |
Domanda
I use Stream reader to read context.Request.InputStream
to the end and end up with a string looking like
"Gamestart=true&GamePlayer=8&CurrentDay=Monday&..."
What would be the most efficent/"clean" way to parse that in a C# console?
Soluzione
You can use HttpUtility.ParseQueryString
Little sample:
string queryString = "Gamestart=true&GamePlayer=8&CurrentDay=Monday"; //Hardcoded just for example
NameValueCollection qscoll = HttpUtility.ParseQueryString(querystring);
foreach (String k in qscoll.AllKeys)
{
//Prints result in output window.
System.Diagnostics.Debug.WriteLine(k + " = " + qscoll[k]);
}
Altri suggerimenti
HttpUtility.ParseQueryString
Parses a query string into a NameValueCollection using UTF8 encoding.
I know this is a bit of a zombie post but I thought I'd add another answer since HttpUtility
adds another assembly reference (System.Web
), which may be undesirable to some.
using System.Net;
using System.Text.RegularExpressions;
static readonly Regex HttpQueryDelimiterRegex = new Regex(@"\?", RegexOptions.Compiled);
static readonly Regex HttpQueryParameterDelimiterRegex = new Regex(@"&", RegexOptions.Compiled);
static readonly Regex HttpQueryParameterRegex = new Regex(@"^(?<ParameterName>\S+)=(?<ParameterValue>\S*)$", RegexOptions.Compiled);
static string GetPath(string pathAndQuery)
{
var components = HttpQueryDelimiterRegex.Split(pathAndQuery, 2);
return components[0];
}
static Dictionary<string, string> GetQueryParameters(string pathAndQuery)
{
var parameters = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
var components = HttpQueryDelimiterRegex.Split(pathAndQuery, 2);
if (components.Length > 1)
{
var queryParameters = HttpQueryParameterDelimiterRegex.Split(components[1]);
foreach(var queryParameter in queryParameters)
{
var match = HttpQueryParameterRegex.Match(queryParameter);
if (!match.Success) continue;
var parameterName = WebUtility.HtmlDecode(match.Groups["ParameterName"].Value) ?? string.Empty;
var parameterValue = WebUtility.HtmlDecode(match.Groups["ParameterValue"].Value) ?? string.Empty;
parameters[parameterName] = parameterValue;
}
}
return parameters;
}
I wish they would add that same method to WebUtility
which is available in System.Net
as of .NET 4.0.
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