/// <summary>
/// 增加参数列表
/// </summary>
/// <param name="cmd">cmd对象</param>
/// <param name="parameterName">参数名</param>
/// <param name="dbType">参数类型</param>
/// <param name="value">参数值</param>
public void AddInParameter(OleDbCommand cmd, string parameterName, DbType dbType, object value)
{
OleDbParameter dbParameter = cmd.CreateParameter();
dbParameter.DbType = dbType;
dbParameter.ParameterName = parameterName;
dbParameter.Value = value;
dbParameter.Direction = ParameterDirection.Input;
cmd.Parameters.Add(dbParameter);
}