VB到C#.net转换器的问题 [英] problem in vb to C#.net convertor

问题描述

大家好
我有一段VB代码
当我将其转换为C#时，转换后的代码给出了错误.
有人可以帮我吗?

vb代码(此代码有效)

Hi all
I hava a piece vb code
When I convert it to C# the converted code gives a error.
Can anybody help me?

vb code (this code works)

Do Until vreadyState = 4
            Application.DoEvents()
            vreadyState = Me.WebBrowser1.ReadyState
        Loop
        Dim eleminput As HtmlElementCollection
        Dim DocCol As HtmlDocument
        DocCol = WebBrowser1.Document
        eleminput = DocCol.GetElementsByTagName("input")

C#代码

c# code

for (; (vreadystate == 4); )
            {
                Application.DoEvents();
                vreadystate = Convert.ToInt32(this.webBrowser1.ReadyState);

            }
            HtmlElementCollection eleminput = default(HtmlElementCollection);
            HtmlDocument DocCol = default(HtmlDocument);
            DocCol = webBrowser1.Document;
            eleminput =DocCol.GetElementsByTagName("input");

当我运行此代码时，我的程序在最后一行有错误
对象引用未设置为对象的实例."

When I run this code my program has a error in the last line
"Object reference not set to an instance of an object."

How to change this code to solve this error?

推荐答案

我使用了以下工具:http://www.developerfusion.com/tools/convert/vb-to-csharp/ [

I used this tool : http://www.developerfusion.com/tools/convert/vb-to-csharp/[^]

while (!(vreadyState == 4)) {
    Application.DoEvents();
    vreadyState = this.WebBrowser1.ReadyState;
}

HtmlElementCollection eleminput = default(HtmlElementCollection);
HtmlDocument DocCol = default(HtmlDocument);
DocCol = WebBrowser1.Document;
eleminput = DocCol.GetElementsByTagName("input");

Is this working for you?

webBrowser1 ?? !!

将其设置为WebBrowser1.
或者，让我们知道您到底从哪里得到此错误.

webBrowser1??!

Make it WebBrowser1.
Or, let us know where exactly you get this error.

更改此

HtmlElementCollection eleminput = default(HtmlElementCollection);
HtmlDocument DocCol = default(HtmlDocument);

到

to

HtmlElementCollection eleminput;
HtmlDocument DocCol;

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