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C# keep value of variable

Posted on 2010-11-27
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Last Modified: 2012-05-10
Are there any method to keep value of  "i" in the code below so that the name of file that change will be continue

public void CopyFiles(string sourceDir, string targetDir)
        {
            string[] sourceFiles = Directory.GetFiles(sourceDir);
            for (int i = 0; i < sourceFiles.Length; i++)
            {
                string sourceFile = sourceFiles[i];
                string targetFile = targetDir + "\\" + "1" + (i + 10).ToString().PadLeft(3, '0') + "1" + ".mp3";
                File.Copy(sourceFile, targetFile, true);
            }
        }

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Question by:teera
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Maverick543 earned 2000 total points
ID: 34224906
You can make use of a global variable.

Assign to 0 before starting the whole copying. Then add it to the line
string targetFile = targetDir + "\\" + "1" + (i + 10 + globalVarI).ToString().PadLeft(3, '0') + "1" + ".mp3";
               
And add the value of i to it at the end of the loop.

See the code below for a full solution

Regards
Marco
int globalI = 0;

public void CopyFiles(string sourceDir, string targetDir)
        {
            string[] sourceFiles = Directory.GetFiles(sourceDir);
            for (int i = 0; i < sourceFiles.Length; i++)
            {
                string sourceFile = sourceFiles[i];
                string targetFile = targetDir + "\\" + "1" + (i + 10 + globalI).ToString().PadLeft(3, '0') + "1" + ".mp3";
                File.Copy(sourceFile, targetFile, true);
            }
            globalI += sourceFiles.Length;
        }

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