only retrieving selected parts of the request.querystring

Question

User-114084758 posted

Hi all,

I have used request.querystring to retrieve the houseID but i only need the ID (381) how can i remove the rest of the unwanted querystring? e.g. EAL_PRICING_HOUSEID%25%25%2f.

the context of my query string is below

QueryString = {houseID=381EAL_PRICING_HOUSEID%25%25%2f}

Many thanks

Paul

Answer 1

User2103319870 posted

Muncher39

Hi all,

I have used request.querystring to retrieve the houseID but i only need the ID (381) how can i remove the rest of the unwanted querystring? e.g. EAL_PRICING_HOUSEID%25%25%2f.

the context of my query string is below

QueryString = {houseID=381EAL_PRICING_HOUSEID%25%25%2f}

Many thanks

Paul

You can use Regex to get only number from string like given below

//Your QUerystring value
string querystring = "houseID=381EAL_PRICING_HOUSEID%25%25%2f";
//Get only the number from string 
string houseid = Regex.Match(querystring, @"\d+").Value;

Ensure that you have added below namespace prior to using above code

using System.Text.RegularExpressions;

• Sample Working Demo

Answer 2

User-114084758 posted

Awesome job, Just what i need :)

can you explain how that regex is working please?

thanks man

Paul

Answer 3

User2103319870 posted

can you explain how that regex is working please?

The method which we used is Regex.Match, this method Searches an input string for a substring that matches a regular expression pattern and returns the first occurrence.

Here we have used the Regex pattern 'd' which represent the numbers from 0-9 and '+' represents one or more occurences. So as a result you will get the numbers.