/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset and takes no parameters) against the database specified in
/// the connection string.
/// </summary>
/// <param name="context">the current context/</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(SqlContext context, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
if(context.Transaction!=null)
return ExecuteScalar(context.Transaction, commandType, commandText, commandParameters);
else
return ExecuteScalar(context.ConnectionString, commandType, commandText, commandParameters);
}
/// <summary>
/// Execute a SqlCommand (that returns no resultset and takes no parameters) against the database specified in
/// the connection string.
/// </summary>
/// <param name="context">The current context.</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(SqlContext context, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteNonQuery(context, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Create and prepare a SqlCommand, and call ExecuteReader with the appropriate CommandBehavior.
/// </summary>
/// <param name="context">the current context.</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>SqlDataReader containing the results of the command</returns>
public static SqlDataReader ExecuteReader(SqlContext context, CommandType commandType, string commandText)
{
return ExecuteReader(context, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Executes a complex sql script.
/// </summary>
/// <param name="context">The current context.</param>
/// <param name="Script">A sql script.</param>
public static void ExecuteScript(SqlContext context, string Script)
{
#if DEBUG
System.Diagnostics.Trace.WriteLine(Script,"ExecuteScript");
#endif
using(System.IO.StringReader reader = new System.IO.StringReader(Script))
{
bool bContueRead = true;
StringBuilder sqlCommandText = new StringBuilder();
while(bContueRead)
{
while(true)
{
string line = reader.ReadLine();
if(line==null)
{
bContueRead = false;
break;
}
string trimLine = line.Trim();
if(trimLine!=string.Empty)
{
if(string.Compare(trimLine,"GO",true)==0)
break;
else
{
sqlCommandText.Append(line);
sqlCommandText.Append("\r\n");
}
}
}
if(sqlCommandText.Length>0)
{
SqlHelper.ExecuteNonQuery(context,CommandType.Text,sqlCommandText.ToString());
sqlCommandText = new StringBuilder();
}
}
}
}
