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Database.cs
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Database.cs
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using System;
using System.Collections.Generic;
using System.Data;
public static partial class Database
{
private static int CommandTimeout = 30;
public delegate void DataReaderDelegate(IDataReader dataRow);
public static int ExecuteNonQuery<T>(IDbConnection connection, string sql, List<T> parameterList, CommandType cmdType) where T : IDbDataParameter
{
using (IDbCommand command = connection.CreateCommand())
{
command.Connection = connection;
command.CommandType = cmdType;
command.CommandTimeout = CommandTimeout;
command.CommandText = sql;
parameterList.ForEach(p => { command.Parameters.Add(p); });
return command.ExecuteNonQuery();
}
}
public static DataTable ExecuteReader<T>(IDbConnection connection, string sql, List<T> parameterList, CommandType cmdType, DataReaderDelegate fn = null) where T : IDbDataParameter
{
DataTable result = null;
if (fn == null)
{
result = new DataTable();
fn = delegate (IDataReader dataReader)
{
result.Load(dataReader);
};
}
using (IDbCommand command = connection.CreateCommand())
{
command.Connection = connection;
command.CommandType = cmdType;
command.CommandTimeout = CommandTimeout;
command.CommandText = sql;
parameterList.ForEach(p => { command.Parameters.Add(p); });
ExecuteReader(command, fn);
}
return result;
}
public static void ExecuteReader(IDbCommand command, DataReaderDelegate fn)
{
using (IDataReader dataRow = command.ExecuteReader())
{
fn(dataRow);
}
}
public static Object ExecuteScalar<T>(IDbConnection connection, string sql, List<T> parameterList, CommandType cmdType) where T : IDbDataParameter
{
using (IDbCommand command = connection.CreateCommand())
{
command.Connection = connection;
command.CommandType = cmdType;
command.CommandTimeout = CommandTimeout;
command.CommandText = sql;
parameterList.ForEach(p => { command.Parameters.Add(p); });
return command.ExecuteScalar();
}
}
public static T GetColumnValue<T>(this DataRow dataRow, int column, T defaultValue)
{
return (dataRow.IsNull(column)) ? defaultValue : (T)dataRow[column];
}
public static T GetColumnValue<T>(this DataRow dataRow, string column, T defaultValue)
{
return (dataRow.IsNull(column)) ? defaultValue : (T)dataRow[column];
}
public static T GetColumnValue<T>(this IDataReader dataReader, int column, T defaultValue)
{
return (dataReader.IsDBNull(column)) ? defaultValue : (T)dataReader[column];
}
public static T GetColumnValue<T>(this IDataReader dataReader, string column, T defaultValue)
{
return GetColumnValue(dataReader, dataReader.GetOrdinal(column), defaultValue);
}
}