下面的C＃代码应该是VB.NET的等价物吗？

Question

//Insert new url in the image tag 
src = "src=\"" + context.Request.Url.Scheme + "://" + context.Request.Url.Authority + src + "\""; 

Receiving Syntax error at "://" while converting from C# to to VB.NET.

Answer 1

转义序列在VB.NET是由双引号加倍。

src = "src=""" + context.Request.Url.Scheme + "://" + context.Request.Url.Authority + src + "\""" 

Answer 2

正如@ Olvarsham的回答所言，VB通过将其加倍而逃脱双引号。

不过，我觉得这将是清洁重写表达格式字符串：

src = String.Format("src=""{0}://{1}{2}""", context.Request.Url.Scheme, context.Request.Url.Authority, src) 

如果引用context.Request.Url上面，它会更简单：

Dim url As Url = context.Request.Url 
src = String.Format("src=""{0}://{1}{2}""", url.Scheme, url.Authority, src)