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---
title: Execute not blocking async shell command in C#
url: non-blocking-shell-exec-csharp.html
date: 2023-05-24
type: notes
draft: false
tags: [csharp, async, shell]
---
Execute a shell command in async in C# while not blocking the UI thread.
```c#
private async Task executeCopyCommand()
{
await Task.Run(() =>
{
var processStartInfo = new ProcessStartInfo("cmd", "/c dir")
{
RedirectStandardOutput = true,
UseShellExecute = false,
CreateNoWindow = true
};
var process = new Process
{
StartInfo = processStartInfo
};
process.Start();
process.WaitForExit();
});
}
```
Make sure that `async` is present in the function definition and `await` is
used in the method that calls `executeCopyCommand()`.
```c#
private async void button_Click(object sender, EventArgs e)
{
await executeCopyCommand();
}
```
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