Issue to netsh command

Question

Issue to netsh command

Scott Huang 3,511

Hi,

Is the following one correct to run one netsh command running command prompt as the administrator? fld1 below is having one netsh command.

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 = fld1;
startInfo.Verb = "runas";
process.StartInfo = startInfo;
process.Start();

RLWA32 52,566 Reputation points

2023-12-31T13:49:20.9133333+00:00
Set startInfo.UseShellExecute to true. It differs in whether it defaults to true depending on whether you are using .Net or .Net Framework.

Post the arguments contained in fld1. There is no way to tell whether or not the posted code snippet will succesffuly run a netsh command in an elevated command prompt without seeing them. Also, why use cmd.exe instead of running netsh.exe directly?
Scott Huang 3,511 Reputation points

2024-01-01T01:31:56.7466667+00:00

I put your suggested line and the netsh command was not finished as expected. I have to call it within C# code. The command is like

netsh advfirewall firewall add rule name="...

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RLWA32 52,566 Reputation points

2023-12-31T13:49:20.9133333+00:00

Set startInfo.UseShellExecute to true. It differs in whether it defaults to true depending on whether you are using .Net or .Net Framework.

Post the arguments contained in fld1. There is no way to tell whether or not the posted code snippet will succesffuly run a netsh command in an elevated command prompt without seeing them. Also, why use cmd.exe instead of running netsh.exe directly?
Scott Huang 3,511 Reputation points

2024-01-01T01:31:56.7466667+00:00

I put your suggested line and the netsh command was not finished as expected. I have to call it within C# code. The command is like

netsh advfirewall firewall add rule name="...

Answer 1

Hi @Scott Huang , Welcome to Microsoft Q&A,

Append "/c" to the command line argument, which instructs Command Prompt to execute the command and then terminate.

Please ensure the following:

The application itself must have sufficient permissions to run the netsh command. This usually requires running the application as an administrator.
The netsh command in fld1 must be a valid and correctly formatted command. Please make sure that the commands in fld1 can be executed correctly in the command prompt.
If the user cancels the prompt for administrator privileges, the catch** block will catch the System.ComponentModel.Win32Exception exception, and you can add appropriate handling code there.

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 " + fld1; // Use "/c" to run the command and then terminate
startInfo.Verb = "runas";

process.StartInfo = startInfo;

try
{
     process.Start();
     process.WaitForExit();
}
catch (System.ComponentModel.Win32Exception ex)
{
     // Handle exceptions, e.g., if the user cancels the elevation prompt
     // MessageBox.Show(ex.Message);
}

Best Regards,

Jiale

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