如何解决名称未在vb.net中声明 [英] how to solve name is not declared in vb.net

问题描述

错误是
未声明名称IIf和DBNull

代码是
cmd.Parameters.Add("@ address2"，SqlDbType.VarChar).Value = IIf(Address2.Trim.Length> 0，Address2，DBNull.Value)

Error is
Name IIf and DBNull are not declared

Code is
cmd.Parameters.Add("@address2", SqlDbType.VarChar).Value = IIf(Address2.Trim.Length > 0, Address2, DBNull.Value)

推荐答案

您必须添加对System.Configuration的引用以及使用Imports关键字.

干杯！

—MRB

You''ll have to add a reference to System.Configuration as well as using the Imports keyword.

Cheers!

—MRB

添加行

Imports System.Configuration

请参阅我最近的解决方案如何解决定义的错误 [

Please see my recent solution how to solve defined error[^].

And please avoid re-posting questions. Even though it''s not re-post, you would not need one question if you know the answers to another one.

—SA

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