将C#转换为VB.NET时出现比较错误

我正在将一些c#代码转换为VB.NET的代码…我在以下方面遇到了错误

C#

VB.NET

If bytes(i - 1) = " "C Then <==error Operator "=" is not defined for types 'Byte' and 'Char'

   returnValue.Append("=20")
ElseIf bytes(i - 1) = ControlChars.Tab Then <==error Operator "=" is not defined for types 'Byte' and 'Char'
   returnValue.Append("=09")
End If

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如果字节（i-1）=“C，那么我认为实际问题在于初始比较。您正在尝试将
字节
与
字符
进行比较。首先尝试将
字节
转换为
字符

if char(bytes(i - 1)) = " "C Then

试着用

Convert.ToChar(bytes(i - 1)) = " "C

或

Convert.ToChar(bytes(i - 1)) = " "C

bytes(i - 1) = Convert.ToByte(" "C)