There is an invalid sequence in the string.

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2.33/5 (3 votes)

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Hello All,
I am using Uri.UnescapeDataString() function, when i am passing the sttring then getting fallowing
error. There is an invalid sequence in the string.

I checked the string there is a character, which is creating the problem, charecter is copied from word document. character was ‘…’.
I think these single quote is creating the problem. Single quate is diffrent then other single quote('').

how can i resolve the issue?

Posted 20-Jan-14 18:31pm

amit_83

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Comments

Karthik_Mahalingam 21-Jan-14 0:37am

can u post the string

amit_83 21-Jan-14 0:51am

String was ‘…’

JoCodes 21-Jan-14 1:25am

the whole string was only '...'? I just tried with the same but was not able to reproduce.

3 solutions

Solution 2

Try to replace copied single quotes with original single quotes and pass in to that method

C#

var  result = yourString.Replace("‘", "'");

Hope this helps

Posted 20-Jan-14 19:01pm

Jameel VM

Comments

amit_83 21-Jan-14 1:39am

Thanks to all, I got the solution i used HttpUtility.UrlDecode in please of UnescapeDataString(). It work.

Solution 3

Thanks to all,
I got the solution, i used HttpUtility.UrlDecode in place of UnescapeDataString().
And its work.!!

Posted 20-Jan-14 19:39pm

amit_83

Updated 20-Jan-14 23:15pm

v2

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Tejas Vaishnav · Accepted Answer · 2014-01-20T18:53:00

Before you pass your sting to Uri.UnescapeDataString()funcation, handel that character or replace them with standard characters.
some thing like...

C#

..........
string strTest =  "‘testing string’";
strTest = strTest.Replace("’","'");
............

or you can also create funcation which will handel this type of special characters in your string like this...

C#

public string ReplaceCharacter(string str){
   // you can add as many character as you need to handel
   str= str.Replace("’","'").Replace("`", "'");
}
string strTest =  "‘testing string’";
strTest = ReplaceCharacter(strTest);