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string.Substring(); Index and length must refer to location

string.Substring(); Index and length must refer to location

Karthi Keyan

9y20.8kVisual Basic .NET

Hi,

i got the error in below code. what i did wrong...

Error : Index and length must refer to a location within the string.\r\nParameter name: length

Code :

int l1 = elespt[0].Length - 50;

int l2 = elespt[0].Length - 1;

string val = elespt[0].ToString();

p1 = val.Substring(l1, l2);

elespt[0] is " this page, it means the vendor you purchased this e-book from did not deliver the correct file. Please contact ".

Thanks in Advance.

2 Replies

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Karthi Keyan9y ago
@Rajeev,

Thanks For your replay.

i solved the problem. the error was, there is the 2 lines in the string. i mean Enter Mark (\n) is in the string. so i split the string with space and joined the all the values again to get the single line string. then i use the substring operation. so it's work fine.

Final Code :

string[] sh = elespt[0].Split(' ');
string val = "";
int k = sh.Length - 6;
for (int n = k;n<= sh.Length-1;n++)
{
if (val == "")
val = sh[n];
else
val = val + " " + sh[n];
}

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Rajeev Punhani9y ago
Hi Karthi Keyan,

Second parameter of Substring is the number of characters starting from the index you specified.Since you have given l2 as length of string -1 so it will be out of range.

Please try
p1=val.Substring(l1, l2-l1);
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