.net Read & Split Parameters How to find the parameters you want

Little scum · Posted on 11/6/2015 5:36:23 PM

For example, there is a string: aaa=1&ccc=test&ddd=code123&..... and many other parameters!

If it is an address bar parameter, you can get the value by simply Request.QueryString["parameter name"] or directly Request["parameter name"]

If it's just a string and you want to parse it, there are two ways
1 Regular Expression 2Split and then perform split traversal
Regular expression method:

/// <summary>
/// 获取url参数
/// </summary>
/// <param name="paramName">参数名称</param>
/// <param name="paramsStr">整个url</param>
/// <returns></returns>
public static string GetParams(string paramName, string paramsStr)
{
Regex regParam = new Regex("(?:^|&)" + paramName + "=(?<Value>[^&]*)", RegexOptions.IgnoreCase);
Match mth = regParam.Match(paramsStr.Trim());
if (mth.Success)
{
//匹配成功
return mth.Groups["Value"].Value;
}
else
{
return null;
}
}

Copy code

As for the second method, you have to split('&') first, and then iterate through this array, and then split('=') to determine whether the [0] parameter name is equal to the specified value, and if it is a specified value, then directly return to the [1] double for loop

The temperature in the northern city is 22 degrees · Posted on 11/9/2015 9:35:18 AM

benefited

Little scum · Posted on 2/26/2017 3:26:22 PM

.net/c# to get the parameter value of the URL
http://www.itsvse.com/thread-3521-1-1.html
(Source: Architect)

Little scum · Posted on 4/9/2023 2:13:56 PM

How to split a string in C# "----" with four-division
The following two are fine. In fact, there is a truth. Because it went to the sky
Split(new string[] { "----" }, StringSplitOptions.RemoveEmptyEntries);
Split(new string[] { "-" }, StringSplitOptions.RemoveEmptyEntries);

[Source] .net Read & Split Parameters How to find the parameters you want

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