VB.NET Combobox.SelectedValue [英] VB.NET Combobox.SelectedValue

问题描述

有没有人听说过你不能将Combobox.SelectedValue设置为1的问题？我有一个带有Combobox的VB.NET 2005数据输入表单。此Combobox是从Access中的查找表填充的。我已经验证了Combobox有适当的ValueMembers和DisplayMembers，它们与查找表中的数据相匹配。

Has anyone heard of a problem where you can't set the Combobox.SelectedValue to 1?  I have a VB.NET 2005 data entry form with a Combobox on it.  This Combobox is populated from a lookup table in Access.  I've already verified that the Combobox has the appropriate ValueMembers and DisplayMembers, and they match up with the data in the lookup table. 

我可以为表中的每个值设置Combobox.SelectedValue属性，除了1.我甚至尝试过硬编码... Combobox.SelectedValue = 1 。 ..那没用。 Combobox.SelectedValue = 2 工作正常。是的，我确实在查找表中有对应于1和2的记录。

I can set the Combobox.SelectedValue property for every value in the table except for 1.  I even tried hardcoding it...Combobox.SelectedValue = 1...that didn't work.  Combobox.SelectedValue = 2 works fine.  And yes, I do have records in the lookup table corresponding to both 1 and 2.

我在Combobox的SelectedIndexChanged事件中使用了以下代码行...

I used the following line of code in the SelectedIndexChanged event of the Combobox...

Messagebox.Show（Me.ComboBox.SelectedValue）

...当我选择第一条记录时，它确实显示了消息框中的SelectedValue为1。

...When I select the first record, it does indeed show a SelectedValue of 1 in the messagebox.

推荐答案

当我将selectedvalue设置为组合框中的第一个项目时，我遇到了同样的问题。你有没有解决这个问题？

I have the same problem when I set the selectedvalue to the first item in the combobox.  Have you solved this yet?

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