Category: .NET

24 Oct 2018 13:41

Joined:	23/07/2010
Level:	Silver
Points:	175

Points:	5

Index and length must refer to a location within the string. Parameter name: length

i get a error.. let me knw how to solve it

Index and length must refer to a location within the string.
Parameter name: length
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentOutOfRangeException: Index and length must refer to a location within the string.
Parameter name: length

Source Error:

Line 131:
Line 132:
Line 133: if (dealwith.Substring(0,8 ).ToString() == "|")
Line 134: dealwith = dealwith.Substring(1, dealwith.Length - 1);

#769792

24 Oct 2018 16:49

Joined:	06/04/2011
Level:	Gold
Points:	857

Points:	2

What is the second parameter in your Substring()? It should be the length of sub string. Often we are mistaken considering it as the end index. So it should be the length of sub string and check whether it exceeds the length of main string.

#769793

27 Oct 2018 00:56

Joined:	17/03/2009
Level:	Gold
Points:	2282

Points:	4

Hi Partiban,

First thing:
Is your dealwith string has more than 8 characters ? because you are trying to extract substring which of 8 characters from the main string ie dealwith. If the main string dealwith is not having enough characters then your substring condition will fail

Second thing: If condition itself wrong, you are trying to extract 8 characters and comparing that 8-character string with single pipe ("|") character which will never be matched.

You can try like this if you want to really check for "|"

if(dealwith.Contains("|"))
{
//Your Logic
}

Index and length must refer to a location within the string. Parameter name: length

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