Hey Chunzhi,

I see that the automation was created a while ago so that is probably why you don't see that System.IO.File component. To use this component you will need to import the System.IO.File in your Toolbox as a static component.

Here are the steps:

Step 1 - Open the toolbox and right-click the "General" bar > select "choose items..."

Step 2 - Click the "OpenSpan Static Members" tab and then browse to mscorlib.dll. After selecting the mscorlib.dll you should see a list of static members. Expand File and then select the "WriteAllText" method. Click OK.

Step 3 - You should now see the "File.WriteAllText" static member underneath the "General" bar. You can drag this component into your automation to use it just like any other component.

Step 4 - After you drag the component in the automation you should now be able to successfully select the "WriteAllText" from the available methods.

Thanks,

Calvin Nix