hi please help me on this how to convert string to decimal

What you're trying to do is not possible because methods such as Convert.ToDecimal etc, do not recognize arithmetic operators such as *, +, - and /.

If you're trying to do this for arbitrarily complex expressions, then you need to use an Eval() function such as the one provided by VBScript which can be used from C#.

To do this, start a new console application project in VS and add a reference to the Microsoft Script Control 1.0 which can be found under the COM tab.

Now enter the following code, build and run:

using System;

using MSScriptControl;

namespace ConsoleApplication1

{

class Program

{

static void Main(string[] args)

{

var sc = new ScriptControl();

sc.Language = "VBScript";

string strValue="(1000*15)/100";

decimal calculatedValue = (decimal)sc.Eval(strValue);

Console.WriteLine("Result: " + calculatedValue);

Console.ReadKey();

}

The output should be:

Result: 150

3 Replies

Know the answer? Post it — somebody with the same question will find it here.

Kunal Vaishya13y ago
Please Check this sample Attached and Link Also

http://www.codeproject.com/Articles/30999/ScriptEngine-User-Defined-Calculations-in-C-VB-JSc
Mallesh13y ago
Hi,

Thank very much its working fine
Vulpes13y ago
What you're trying to do is not possible because methods such as Convert.ToDecimal etc, do not recognize arithmetic operators such as *, +, - and /.

If you're trying to do this for arbitrarily complex expressions, then you need to use an Eval() function such as the one provided by VBScript which can be used from C#.

To do this, start a new console application project in VS and add a reference to the Microsoft Script Control 1.0 which can be found under the COM tab.

Now enter the following code, build and run:

using System;
using MSScriptControl;

namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
var sc = new ScriptControl();
sc.Language = "VBScript";
string strValue="(1000*15)/100";

decimal calculatedValue = (decimal)sc.Eval(strValue);
Console.WriteLine("Result: " + calculatedValue);
Console.ReadKey();
}
}
}

The output should be:

Result: 150