Silent install SQL server compact .MSI programmatically C#

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C#

Well my project depends on SQL Server Compact 3.5.1 , so I want it to be installed automatically and without any user interaction to make it easy for very basic users.
The two .msi are SSCERuntime_x86-ENU.msi , SSCERuntime_x64-ENU.msi and they'll be located in the same folder of the .exe

I've tried many sample codes but they didn't allow me to silent install the .msi , any help would be appreciated.

What I have tried:

try
{
string installCommandString = "/i {0} /qn";

Process process = new Process();
ProcessStartInfo startInfo = new ProcessStartInfo();
process.StartInfo = startInfo;

startInfo.UseShellExecute = false;
startInfo.RedirectStandardError = true;

startInfo.FileName = "SSCERuntime_x86-ENU.msi";
startInfo.Arguments = string.Format(installCommandString, "SQL Server MSI Path");

process.Start();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error");
}