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c#winformshexdecimaldata-conversion
Gernatch
Gernatch

Reputation: 185

Converting a decimal (user string) into hex with 0x prefix

I am trying to take a user defined decimal value from a textBox, convert to a hex (with the 0x) prefix then store that value to an integer. I'm currently stuck at getting the 0x prefix, but maybe there is a more appropriate way to accomplish this. 

        string decimalString = textBox1.Text;

        //Convert decimalString string into an int
        int decimalNumber = int.Parse(decimalString);
        //Convert decimalNumber to a hex string
        string hexString = decimalNumber.ToString("X");

        Console.Write(decimalNumber);

        //TextBox Input: 151
        //Console Output: 97
        //Desired Output: 0x97 (as a string, but would like to assign to int if possible).
        int finalDesiredOutput = 0x97;

Hope I am explaining this well.

In this project I'm trying to replace the 13th byte in a header with a decimal value between 0-2600 (user entered value). It's easier for a user to enter a decimal as opposed to a hex value (i.e. 2600, rather than A28).

Upvotes: 2

Views: 6703

Answers (2)

user3839515
user3839515

Reputation: 11

StringBuilder sb = new StringBuilder();

string hex = "C26B3CB3833E42D8270DC10C";


for (int i = 0; i < hex.Length; i++)
{
    if(i%2==0)
    {
         sb.Append(",0x").Append(hex.Substring(i, 2));
    }
}
Console.WriteLine(sb.ToString());

Upvotes: 0

sujith karivelil
sujith karivelil

Reputation: 29026

What about String.Format()

 string hexString =String.Format("0X{0:X}", decimalNumber);

Upvotes: 6

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