CODEWITHSUNDEEP
c#winforms
Venusha Dilshan Dushmantha
Venusha Dilshan Dushmantha

Reputation: 47

How to get the cmd command output in c# to a lable

I wrote a code for run cmd commands from c# form application. Now I want to get the output of the cmd to a lable in winform. I wrote a code. but it is giving me following error

Screenshot of the Error

An unhandled exception of type 'System.InvalidOperationException' occurred in System.dll Additional information: StandardOut has not been redirected or the process hasn't started yet.

how to fix it? this is my original code.

private void button1_Click(object sender, EventArgs e)
{
    System.Diagnostics.Process process = new System.Diagnostics.Process();
    System.Diagnostics.ProcessStartInfo startiNFO = new  System.Diagnostics.ProcessStartInfo();

    startiNFO.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
    startiNFO.FileName = "cmd.exe";
    startiNFO.Arguments = "/C ipconfig";
    startiNFO.UseShellExecute = false;

    process.StartInfo.RedirectStandardOutput = true;
    process.StartInfo.RedirectStandardInput = true;

    process.StartInfo = startiNFO;

    process.Start();

    string outp = process.StandardOutput.ReadToEnd();
    process.WaitForExit();

    MessageBox.Show(outp);
}

Upvotes: 2

Views: 4800

Answers (1)

Mohit S
Mohit S

Reputation: 14024

instead of process.WaitForExit(); do something like this

The complete code for your function would look something like this

private void button1_Click(object sender, EventArgs e)
{
    System.Diagnostics.Process process = new System.Diagnostics.Process();
    process.StartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
    process.StartInfo.FileName = "cmd.exe";
    process.StartInfo.Arguments = "/C ipconfig";
    process.StartInfo.UseShellExecute = false;
    process.StartInfo.CreateNoWindow = true;
    process.StartInfo.RedirectStandardOutput = true;
    process.StartInfo.RedirectStandardInput = true;
    process.Start();
    string q = "";
    while(!process.HasExited)
    {
        q += process.StandardOutput.ReadToEnd();
    }
    label1.text = q;
    MessageBox.Show(q);
}

Upvotes: 6

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