Using Bulkcopy.WriteToServer(DataTable)

Nov 11, 2007

I'm trying to use the SQL Bulk copy class to bulk import from a text file.
I'm getting the following error:
 Line 24: bulkCopy.WriteToServer(CreateDataTableFromFile());

System.Data.SqlClient.SqlException: An error has occurred while establishing a
connection to the server.  When connecting to SQL Server 2005, this failure may
be caused by the fact that under the default settings SQL Server does not allow
remote connections. (provider: Named Pipes Provider, error: 40 - Could not open
a connection to SQL Server)
 
I've even tried to allow remote connections thro pipes and restarted the database engine but to no avail.
 
Any inputs/suggestions?
 

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SqlBulkCopy.WriteToServer Succeeds Or Fails Depending On The Size Of DataTable?

Mar 4, 2008

Hello,I am trying to bulk copy some data from a text file to SqlServer. In my case, the table in SqlServer is simple. It has two columns: Symbol <nchar(5), Primary Key> and Company <nvarchar(50)>. Each row in the text file is Symbol and Company separated by a "#". Below is the code of my bulk copy:        public static void StartImport(string sourceFile)        {            SqlBulkCopy bulkCopy = new SqlBulkCopy(connString_local, SqlBulkCopyOptions.TableLock);            bulkCopy.DestinationTableName = "dbo.NasdaqSymbols";            DataTable dt = CreateSymbolDataTable(sourceFile);            bulkCopy.WriteToServer(dt);        }        private static DataTable CreateSymbolDataTable(string filePath)        {            DataTable dt = new DataTable();            DataColumn dc;            DataRow dr;            dc = new DataColumn();            dc.DataType = Type.GetType("System.String");            dc.ColumnName = "Symbol";            dc.Unique = true;            dt.Columns.Add(dc);            dc = new DataColumn();            dc.DataType = Type.GetType("System.String");            dc.ColumnName = "Company";            dc.Unique = false;            dt.Columns.Add(dc);            StreamReader sr = new StreamReader(filePath);            string input;            while ((input = sr.ReadLine()) != null)            {                string[] s = input.Split(new string[] { "#" }, StringSplitOptions.None);                dr = dt.NewRow();                dr["Symbol"] = s[0].Trim();                dr["Company"] = s[1].Trim();                dt.Rows.Add(dr);            }            sr.Close();            return dt;        } The problem is, I got the following exception when I tried to call my StartImport method (thrown from SqlBulkCopy.WriteToServer): System.InvalidOperationException: The given value of type String from the data source cannot be converted to type nvarchar of the specified target column. It turned out that the problem seems not to be String to nvarchar; because when I use a source text file which contains only about a dozen of rows, it works! I have no idea why SqlBulkCopy.WriteToServer works fine on a small set of data. Or is there something I overlooked? Thank you for time and help.Gary 

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Hello,



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Do I have to do it this way?
 
 
 
 
 
 
 

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I'm trying to use a function to avoid having to run a sproc on every employee on the employee table and storing it in an actual field /table every time I need to run this function.

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