/// <summary>
/// 根据配置文件中所配置的数据库类型
/// 来创建相应数据库的参数对象
/// </summary>
/// <returns></returns>
public static DbParameter CreateDbParameter(string paramName, object value, DbType dbType)
{
DbParameter param = DbParameterExtension.CreateDbParameter();
param.DbType = dbType;
param.ParameterName = paramName;
param.Value = value;
return(param);
}
/// <summary>
/// 为即将执行准备一个命令
/// </summary>
/// <param name="conn">SqlConnection对象</param>
/// <param name="cmd">SqlCommand对象</param>
/// <param name="isOpenTrans">DbTransaction对象</param>
/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
/// <param name="strSql">存储过程名称或者T-SQL命令行, e.g. Select * from Products</param>
/// <param name="dbParameter">执行命令所需的sql语句对应参数</param>
private void PrepareCommand(DbConnection conn, IDbCommand cmd, DbTransaction isOpenTrans, CommandType cmdType, string strSql, params DbParameter[] dbParameter)
{
if (conn.State != ConnectionState.Open)
{
conn.Open();
}
cmd.Connection = conn;
cmd.CommandText = strSql; // DbParameters.ToDbSql(cmdText);
if (isOpenTrans != null)
{
cmd.Transaction = isOpenTrans;
}
cmd.CommandType = cmdType;
if (dbParameter != null)
{
dbParameter = DbParameterExtension.ToDbParameter(dbParameter);
foreach (var parameter in dbParameter)
{
cmd.Parameters.Add(parameter);
}
}
}