需要帮助VB.NET中的某些代码 [英] Need help for a certain code in VB.NET

问题描述

我不知道为什么我的代码出错了。

  Dim  objRpt  As  新 CrystalReport1 

我需要导入什么？或者我是否必须做一些特殊的操作才能删除错误？



错误说明，CrystalReport1未定义。我不知道该怎么办。



谢谢！



我试过的：



我还没有真正尝试过任何东西，因为我不知道该怎么办。

解决方案

正如错误消息所述，在Crystal Report库中没有名为 CrystalReport1 的类。查看您拥有的变量名称，您是否正在尝试创建ReportDocument类的新实例。



要开始使用，请查看示例如何在VB.NET中加载和显示Crystal Reports [ ^ ]。这篇文章很旧但很多细节仍然有效。

错误非常明确： CrystalReport1未定义

这意味着没有定义名为 CrystalReport1 的类，可能是因为它是您添加到表单中的CrystalReports实例。 br />
尝试直接使用 CrystalReport1 而不是 objRpt 来访问您添加的实例。

I don't know why I get an error on this code.

Dim objRpt As New CrystalReport1

What do I have to import? Or do I have to do anything special to remove the error?

The error says, CrystalReport1 is not defined. I don't know what to do.

Thanks!

What I have tried:

I haven't really tried anything because I don't know what to do with it.

解决方案

Exactly as the error message said, in the Crystal Report library there is no class named CrystalReport1. Looking at the variable name you have, are you trying to create a new instance of a ReportDocument class.

To get started, have a look at for example How to Load and Display Crystal Reports in VB.NET[^]. The article is old but many of the details are still valid.

The error is pretty clear: "CrystalReport1 is not defined"
What it means is that there is no class defined called CrystalReport1, probably because it is an instance of CrystalReports that you added to your form.
Try using CrystalReport1 directly instead of objRpt to access the instance you added.

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