Executing a stored procedure using a DbConnection
I need to execute a stored procedure on a database. This is what I got so far that works:
protected DbProviderFactory dbProviderFactory;
this.dbProviderFactory = DalFactory.GetFactory(this.adapterConfiguration);
DbConnection dbConnection = dbProviderFactory.CreateConnection();
dbConnection.ConnectionString = this.adapterConfiguration.DatabaseInformation.ExternalDatabaseInformation.connectionString;
try
{
dbConnection.Open();
}
catch (Exception e)
{
throw;
}
I suspect that DbCommand would do it, but haven't found anything working. Let's say that the stored procedure b开发者_如何转开发y the name "initialize" has to be executed. How do I do that?
For SqlServer, this could be like this :
DbCommand command = new SqlCommand();
command.CommandType = System.Data.CommandType.StoredProcedure;
command.CommandText = "<your stored proc>";
command.Connection = dbConnection;
SqlParameter param1 = new SqlParameter("<your parameter>", MyVar);
command.Parameters.Add(param1);
//[...]
SqlParameter returnValue = new SqlParameter("ReturnValue", User);
returnValue.Direction = System.Data.ParameterDirection.ReturnValue;
command.Parameters.Add(returnValue);
command.Connection.Open();
command.ExecuteNonQuery();
int result = (int)command.Parameters["ReturnValue"].Value;
command.Connection.Close();
Create a command, the command text should be the name of the SP, and the command type should be StoredProcedure.
I'm doing dynamic queries in most of my app, but have EF too. I pass a _ctx EF DbContext to run my stored procedure. I'm sure there's a way to do this all in sql, but I haven't figured it out yet.
using (_ctx)
{
if (_ctx.Database.Connection.State != ConnectionState.Open)
_ctx.Database.Connection.Open();
foreach (var name in _tableNames)
{
using (var cmd = _ctx.Database.Connection.CreateCommand())
{
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = @"UpdateRMRowsToUpload";
cmd.Parameters.Add(new SqlParameter("@tableName", SqlDbType.VarChar));
cmd.Parameters["@tableName"].Direction = Input;
cmd.Parameters["@tableName"].Value = name;
cmd.ExecuteNonQuery();
}
}
if (_ctx.Database.Connection.State == ConnectionState.Open)
_ctx.Database.Connection.Close();
}
精彩评论