VB.NET中的Crystal Report转换 [英] Crystal Report Casting in VB.NET

问题描述

大家好，

我对VB.NET中的Crystal Report有点困惑.
当我在C#.NET中使用以下代码时，没有问题:

Hi Everybody,

I have a little bit confusion about Crystal Report in VB.NET.
when i use the following code in C#.NET,there is no Problem:

crTable = (CrystalDecisions.CrystalReports.Engine.Table)arrTables[0];

但是，我更改为VB.NET.问题开始了
我的vb代码在那里:

Nevertheless, I change to VB.NET.the problem starts
my vb code is there:

crTable = DirectCast(arrTables(0), CrystalDecisions.CrystalReports.Engine.Table)

显影时间出错.
错误消息:"value of type''CrystalDecisions.CrystalReports.Engine.Table'' cannot be converted to ''1-dimensional array of CrystalDecisions.CrystalReports.Engine.Table''."

这段代码有什么问题.请指导我. :confused:

There is error in developing time.
error message: "value of type''CrystalDecisions.CrystalReports.Engine.Table'' cannot be converted to ''1-dimensional array of CrystalDecisions.CrystalReports.Engine.Table''."

What wrong with this code. please, guide me. :confused:

推荐答案

如何在VB.NET代码中声明crTable ?该错误表明您应在将其声明为CrystalDecisions.CrystalReports.Engine.Table时将其声明为数组.

How have you declared crTable in your VB.NET code? The error indicates that you have declared it as an array when it should be declared as a CrystalDecisions.CrystalReports.Engine.Table.

如果您的arrTables 被声明为array of CrystalDecisions.CrystalReports.Engine.Table，则

和crTable 被声明为CrystalDecisions.CrystalReports.Engine.Table的单个实例，

那我不明白为什么你不能不使用演员表就设置它...

If your arrTables was declared as an array of CrystalDecisions.CrystalReports.Engine.Table,

and crTable is declared as a single instance of CrystalDecisions.CrystalReports.Engine.Table,

then I don''t see why you couldn''t just set it without the cast...

crTable = arrTables(0)

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