What should be the VB.NET equivalent of below C# code?

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

As @Olvarsham's answer puts, VB escapes double-quotes by doubling them.

However I feel it would be cleaner to rewrite the expression as a format-string:

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

If you reference context.Request.Url above, it gets simpler:

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

Answer 2

VB.NET的转义序列是通过将双引号加倍来实现的。

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