尝试连接到SQL Server数据库时出现“ SqlException未处理”错误

Question

I have a program that takes information passed to it, and puts the information in a database. The program is being created in VS2008 for a Windows Ce 6.0 device, and I am having trouble connecting to the database. I want to connect over the local network, but not entirely too sure how to do so. Here is my code for the function that calls the database.

public void callSQL(string partNumber, int total, int numOfPacks, string dunsNumber, string serialNumber, string laneNumber)
{
    //establish connection
    string conString = "Data Source=10.97.2.67,1433;Initial Catalog=testing.mdf;User ID=**********;Persist Security Info=false";

    using (SqlConnection con = new System.Data.SqlClient.SqlConnection(conString))
    {
        con.Open();

        try
        {
            //open the server
            //Insert values passed into the method
            SqlCommand myCommand = new SqlCommand("INSERT INTO test (Part_Number, total, number_of_packs, dunsNumber, serialNumber, truck_number) VALUES (@Part_Number,@total,@number_of_packs,@dunsNumber,@serialNumber,@truck_number)", con);
            myCommand.Parameters.AddWithValue("@Part_Number", partNumber);
            myCommand.Parameters.AddWithValue("@total", total);
            myCommand.Parameters.AddWithValue("@number_of_packs", numOfPacks);
            myCommand.Parameters.AddWithValue("@dunsNumber", dunsNumber);
            myCommand.Parameters.AddWithValue("@serialNumber", serialNumber);
            myCommand.Parameters.AddWithValue("@truck_number", laneNumber);

            //execute the query
            myCommand.ExecuteNonQuery();
            con.Close();
        }
        catch (SqlException e)
        {
           string error = e.ToString();
           error = error.ToLower();

           if (error.Contains("duplicate") == true)
           {
              Console.WriteLine("You have already scanned this barcode.");
           }
        }
    }
}

When I run the code, the code stops at con.Open(); and I get an error which says

SqlException was unhandled

Here is the information from the error:

System.Data.SqlClient.SqlException {"SqlException"}
[System.Data.SqlClient.SqlException] {"SqlException"}
{Systen.Data.SqlClient.SqlErrorCOllection}
LineNumber 0
Message "SqlException"
Number 17
Procedure "ConnectionOpen(Connect())."
Server "10.97.2.67,1433"
Source ".Net SqlClient Data Provider"
StackTrace
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, TdsParserState state)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, TdsParserState state)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning()
at System.Data.SqlClient.TdsParser.Connect(String host, SqlInternalConnection connHandler, Int32 timeout)
at System.Data.SqlClient.SqlInternalConnection.OpenAndLogin()
at System.Data.SqlClient.SqlInternalConnection..ctor(SqlConnection connection, Hashtable connectionOptions)
at System.Data.SqlClient.SqlConnection.Open()
at scan.partObject.callSQL(String partNumber, Int32 total, Int32 numOfPacks, String dunsNumber, String serialNumber, String laneNumber)
at scan.Program.Main(String[] args)

Thanks

Answer 1

To me it looks like your IP Address issue. Check your IP Address and try connecting it again.

IPv4 Address should have 4 domain each between 0 to 255. For details visit here

Your IP Address is "10.97.2.67,1433", I think remove 1433 and then try again. In order to use port number with your IP Address, change your IP Address as "10.97.2.67:1433". Hopefully this will solve your issue.

Answer 2

This was an error due to the connection string. Here is the format the connection string should be if you want to connect to a SQL server over a network.

Data Source=myServerAddress;Initial Catalog=myDataBase; Integrated Security=SSPI;User ID=myDomain\myUsername;Password=myPassword;

myServerAddress can be found on SQL properties. Good Luck!