使用vb.net从Windows mboile中的sql获取数据 [英] getting data's from sql in windows mboile using vb.net

问题描述

大家好，我已经创建了小型移动应用程序，在我的mobiel应用程序中，我有连接类文件，在该文件中，我正在将应用程序连接到数据库和
执行插入查询，我正在使用sqlcedatareader从sql检索数据，现在我在sqlcedatareader中有我的数据集合
我如何从sqlcedatareader将数据分配给我的文本框控件
请注意，我的sqlcedatareader位于类文件中，文本框控件的格式为

hi all i have created small mobile application, in my mobiel application i have connection class file where i am connecting to my application to database and
excuting insert query, i am reteriving data''s from sql using sqlcedatareader,now i have my collection of data''s in sqlcedatareader
how i ll assign the data''s to my text box control from the sqlcedatareader
note my sqlcedatareader is in class file, text box control in form

推荐答案

取决于连接类文件如何返回该数据.
就文本框而言，这与众不同:

Depends on how the connection class file returns that data.

As far as the text box is concerned , it is nothing out of the ordinary:

myTextBox.Text = stringFromSomewhere

如果您的类文件返回了SqlDataReader(这将是一个很糟糕的主意-应该将它们处理掉，并且通常在需要时调用Dispose是创建者的责任)，则只需访问它并移动它即可:

If your class file is returning the SqlDataReader (and that would be a reasonably bad idea - they should be disposed, and it is normally the responsibility of the creator to call Dispose when needed) then just access that and move it:

If reader.Read() Then
	Dim desc As String = DirectCast(reader("description"), String)
	myTextBox.Text = desc
End If

如果没有，那么我们需要知道它的作用返回以给您更详细的答案.

If it doesn''t, then we would need to know what it does return to give you a more detailed answer.

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