| public static IsDBNull ( object value ) : bool | ||
| value | object | |
| return | bool | |
public static Boolean IsDBNull <T>(this T @this) where T : class
{
return(Convert.IsDBNull(@this));
}
/// <summary>
/// 将指定的执行命令转换成完整字符串形式。
/// </summary>
/// <param name="command">执行命令。</param>
/// <returns>完整执行命令的字符串形式。</returns>
public static string ToFullString(this ExecuteCommand command)
{
if (command == null)
{
throw new ArgumentNullException(nameof(command));
}
StringBuilder builder = new StringBuilder(command.Text);
if (command.Parameters != null)
{
builder.AppendLine();
builder.AppendLine("*** Parameters ***");
foreach (var item in command.Parameters)
{
builder.AppendFormat("{0}\t=\t{1}\r\n", item.Name + (item.Value == null ? string.Empty : " <" + item.Value.GetType().Name + ">"), (item.Value == null || Convert.IsDBNull(item.Value)) ? "<NULL>" : item.Value);
}
builder.AppendLine("*** Parameters ***");
}
return(builder.ToString());
}
