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C# create database from text backup

Posted on 2011-02-27
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Last Modified: 2012-08-13
I'm getting ready to deploy my new app and am having a hard time getting the database deployed.

I was hoping to "generate scripts" from within MSSQl 2008R2 and deploy them back using C#.  I can use the created script within MSSQL to create the DB but it won't allow me to use the same script within C#.

How I'm doing it...

I created a .TXT file wtih the DB script in the project then loading that into a string.

StreamReader _textStreamReader;
            Assembly _assembly;

            _assembly = Assembly.GetExecutingAssembly();
            _textStreamReader = new StreamReader(_assembly.GetManifestResourceStream("SP.DBCreate.txt"));
            string szQuery = _textStreamReader.ReadToEnd();

            try
            {
                using (OleDbConnection aConnection = new OleDbConnection("Provider=SQLNCLI10;Server=localhost;Database=Master;Uid=sa;pwd=mypass"))
                {
                    aConnection.Open();
                    using (OleDbCommand dbCommand = new OleDbCommand(szQuery, aConnection))
                        dbCommand.ExecuteNonQuery();
                }
            }
            catch (OleDbException e)
            {
                string szMsg = "CheckSQL/CreateTables:" + e.Errors[0].Message;
                MiscDBFunc.WriteLogEntry(szMsg, 200);
            }

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I'm getting an error/exception on the db call...

"Incorrect syntax near 'GO'"...

When  I did the create scripts it put in "GO"'s after each of the SQL lines.

Any idea what's going on or how I can get this to work?

Thanks
  sj
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Comment
Question by:sej69
7 Comments
 
LVL 14

Expert Comment

by:robasta
ID: 34994622
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Assisted Solution

by:robasta
robasta earned 100 total points
ID: 34994629
>>GO is not a Transact-SQL statement; it is a command recognized by the sqlcmd and osql utilities and SQL Server Management Studio Code editor.

thats why we need to split the commands and run them seperately

from here: http://msdn.microsoft.com/en-us/library/ms188037.aspx
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Accepted Solution

by:
Sudhakar Pulivarthi earned 400 total points
ID: 34994818
hi,

Please use this code after you read the script data which will remove the comments and GO statements and generates a valid SQL statements for execution. It worked for me and i am using it.
// Prefix the namespace to point to the resource.
string scriptData = null;

                using (StreamReader reader = new StreamReader(Assembly.GetExecutingAssembly().GetManifestResourceStream(SP.DBCreate.txt)))
                {
                    // Get the whole script once.
                    scriptData = reader.ReadToEnd();
                }

                // Remove all the GO statements.
                scriptData = scriptData.Replace("GO", "");
                // Replace Comments with empty string.
                scriptData = Regex.Replace(scriptData, "([/*][*]).*([*][/])", "");
                // Replace Chain of spaces with one Space.
                scriptData = Regex.Replace(scriptData, "\\s{2,}", " ");

// Here execute the script on dbconnection

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LVL 10

Expert Comment

by:Jacco
ID: 34995475
Here is a thing I found.

Be sure to reference the following DLLs:

C:\Program Files\Microsoft SQL Server\100\SDK\Assemblies\Microsoft.SqlServer.Smo.dll
C:\Program Files\Microsoft SQL Server\100\SDK\Assemblies\Microsoft.SqlServer.Management.Sdk.Sfc.dll
C:\Program Files\Microsoft SQL Server\100\SDK\Assemblies\Microsoft.SqlServer.ConnectionInfo.dll

I also had to set my app to .NET version 2.0 in stead of 4.0 but don't know if that  is really required.
var cn = new SqlConnection("Data Source=yourServer;Initial Catalog=yourDatabase;Integrated Security=True");
            Server srvr = new Server(new ServerConnection(cn));
            string s = "alter table yourTable add test varchar(25);\r\nGO\r\nalter table yourTable add test1 varchar(25);";
            srvr.ConnectionContext.ExecuteNonQuery(s);

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Expert Comment

by:Jacco
ID: 34995505
The above parses the GOes correctly.

It uses sqlsmo classes :-)
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Author Closing Comment

by:sej69
ID: 34996980
You guys rock!  The code worked beautifully.  For future postarity I also needed to include
using System.Text.RegularExpressions;

To use the regex in the statements listed.
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Expert Comment

by:Jacco
ID: 34997099
Did you try my solution?
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