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POStart Process - then add to it later (MS Excel Example)
 

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    <p>I've got a data collection routine that takes about 10 seconds to run, then it saves data to a CSV file:</p> <pre><code>string file = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), "Book1.csv"); StreamWriter streamWriter1 = new StreamWriter(File.Open(file, FileMode.Create, FileAccess.Write)); DataTable table = GetMyData(); // takes about 10 seconds foreach (DataRow row in table.Rows) { object[] item = row.ItemArray; for (int i = 0; i &lt; item.Length; i++) { streamWriter1.Write(item.ToString() + ","); } streamWriter1.WriteLine(); } streamWriter1.Close(); Process.Start("Excel", "book1.csv"); </code></pre> <p>Excel takes a few moments to start as well (5 to 10).</p> <p>I'd like to modify this technique so that I call Excel just before my data collection so the application will be running by the time I have collected the data, then just have it display the file with the data.</p> <p>With this in mind, here's what I modified the code to, but it always tells me the file is not there (even though it is):</p> <pre><code>Process excel = Process.Start("Excel"); if (excel != null) { string file = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), "Book1.csv"); StreamWriter streamWriter1 = new StreamWriter(File.Open(file, FileMode.Create, FileAccess.Write)); DataTable table = GetMyData(); // takes about 10 seconds foreach (DataRow row in table.Rows) { object[] item = row.ItemArray; for (int i = 0; i &lt; item.Length; i++) { streamWriter1.Write(item.ToString() + ","); } streamWriter1.WriteLine(); } streamWriter1.Close(); for (int i = 0; i &lt; 100; i++) { // simulate the data collection routine Thread.Sleep(100); } excel.StartInfo.Arguments = file; excel.StartInfo.ErrorDialog = true; excel.StartInfo.UseShellExecute = false; excel.StartInfo.WorkingDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments); try { excel.Start(); } catch (Exception err) { Console.WriteLine(err.Message); // &lt;= Message is "The system cannot find the file specified" } } </code></pre> <p>Any thoughts? How would I correctly send the file to the active process?</p>
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