Convert a long string to an integer

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.NET3.5

Hello,

I need to convert a string of length equals to 24 to an integer.

Convert.ToInt32()isn't working for me, its throwing the following error:
Value was either too large or too small for an Int32.

I tried Convert.ToInt64() and it showed the same error.

I need this conversion for numerical comparisons. The conversion doesn't need to be to an integer type.

Any idea how to resolve this issue?

Thank you

Posted 1-Oct-10 2:41am

deadwood88

Updated 1-Oct-10 2:44am

v3

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Rod Kemp · Answer 1 · 2010-10-01T02:56:00

Solution 2

You could try something like the C# BigInteger Class[^].

Posted 1-Oct-10 2:56am

Rod Kemp

Terence Wallace · Answer 2 · 2010-10-01T02:49:00

Solution 1

Is this what your referring to:

C#
int @int = int.Parse("123456789009876543211234");

VB.NET
Dim int As Integer = Integer.Parse("123456789009876543211234")

Posted 1-Oct-10 2:49am

Terence Wallace

Comments

deadwood88 1-Oct-10 9:21am

This gives the same error: Value was either too large or too small for an Int32

Rhuros · Answer 3 · 2010-10-01T02:58:00

Solution 3

Convert it to a double

string test = "0123456789012345678901234567890";

double dTest = Convert.ToDouble(test);

this will produce 1.2345678901234568E+29 precision could be a problem however...

Posted 1-Oct-10 2:58am

Rhuros

Updated 1-Oct-10 2:59am

Comments

deadwood88 1-Oct-10 9:34am

Yes, there is a problem with precision here.