On 02/06/2007 in message <O9SjclSpHHA.1220@TK2MSFTNGP03.phx.gbl> zlf wrote:

>Thank you, I still want to know whether this is way to call the default
>assoicated program to open it.
>E.g: If bmp is selected, maybe mspaint will be called. If .doc is
>selected, microsoft word will be launched. Thx

> you can do it couple of ways.
>
> First using File select dialog, select the name of the file selected into
> a
> string.
>
> 1. use pinvoke and call the api shellexecute with the bmp file selected.
> here is the unmanaged example.
> http://support.microsoft.com/default.aspx/kb/170918
>
> 2. launch mspaint.exe with process class in .NET
> System.Diagnostics.Process proc = new System.Diagnostics.Process();
>
> proc.StartInfo.FileName = "mspaint.exe";
> // set windows dir
> proc.StartInfo.WorkingDirectory = .....
> // pass the bmp file name with full path
> proc.StartInfo.Arguments =
>
> proc.Start();
>
> -VR
>
> "zlf" wrote:
>
>> Hi,
>> In my program, client is allowed to select a image file from open file
>> dialog. And I am required to provide a preview button, when clicking it,
>> system program like paint should be called to open that file.
>>
>> May you tell me how to implement that. Thx
>>
>> zlf
>>
>>
>>

> On 02/06/2007 in message <O9SjclSpHHA.1220@TK2MSFTNGP03.phx.gbl> zlf
> wrote:
>
>>Thank you, I still want to know whether this is way to call the default
>>assoicated program to open it.
>>E.g: If bmp is selected, maybe mspaint will be called. If .doc is
>>selected, microsoft word will be launched. Thx
>
> If you call Process.Start using just a document name the default
> application (assuming there is one) will open. I use:
>
> public static bool StartProcess(string strCommand, string strWD, out
> string strErr)
> {
> bool blnOK = false;
> ProcessStartInfo psi = new ProcessStartInfo();
> strErr = "";
>
> // Initialize the ProcessStartInfo structure
> psi.FileName = strCommand;
> psi.WorkingDirectory = strWD;
>
> psi.RedirectStandardInput = false;
> psi.RedirectStandardOutput = false;
> psi.UseShellExecute = true;
> Process proc = new Process();
> try
> {
> Process.Start(psi);
> blnOK = true;
> }
> catch (Exception e)
> {
> strErr = e.Message;
> blnOK = false;
> }
> return blnOK;
> }
>
> --
> Jeff Gaines