title: Unable to cast object of type 'System.Object[]' to type 'System.String[]'
body: <p>I am developing a C# VS 2008 / SQL Server website application.  I am a newbie to ASP.NET.  I am getting the above error, however, on the last line of the following code.  Can you give me advice on how to fix this?  This compiles correctly, but I encounter this error after running it.</p>
  
  <p>All that I am trying to do is to store the items from the second row of "dt" into string parameters.  The first row is the header, so I don't want these values.  The second row is the first row of values.  My SQL stored procedure requires these values as strings.  So I want to parse the second row of data and load into 2 string parameters.  I added more of my code below.</p>
  
  <pre><code>DataTable dt; 
  Hashtable ht;
  string[] SingleRow;
  ...
  SqlConnection conn2 = new SqlConnection(connString);
  SqlCommand cmd = conn2.CreateCommand();
  cmd.CommandText = "dbo.AppendDataCT";
  cmd.Connection = conn2;
  SingleRow = (string[])dt.Rows[1].ItemArray;
              SqlParameter sqlParam = cmd.Parameters.AddWithValue("@" + ht[0], SingleRow[0]);
              sqlParam.SqlDbType = SqlDbType.VarChar;
              SqlParameter sqlParam2 = cmd.Parameters.AddWithValue("@" + ht[1], SingleRow[1]);
              sqlParam2.SqlDbType = SqlDbType.DateTime;
  </code></pre>
  
  <p>My error:</p>
  
  <pre><code>System.InvalidCastException was caught
    Message="Unable to cast object of type 'System.Object[]' to type 'System.String[]'."
    Source="App_Code.g68pyuml"
    StackTrace:
         at ADONET_namespace.ADONET_methods.AppendDataCT(DataTable dt, Hashtable ht) in c:\Documents and Settings\Admin\My Documents\Visual Studio 2008\WebSites\Jerry\App_Code\ADONET methods.cs:line 88
    InnerException: 
  </code></pre>