vb.net字符串替换aspx

Question

Trying to replace a string when a user clicks a button. Replace has worked so far but can't get it to work this time.

I have a protected variable, tPage in my class which stores a html page.

Basically I have a asp input field like so:

<input type='hidden' name='hiredate' style='height:50px; width: 49%; border:0px solid; float:right;' />

(please ignore the inline css, it will be removed later)

The page that holds the input is fed into a string variable and accessed later in order to un-hide the input at a later time.

I've tried using the replace function like so:

tPage &= "<input type='hidden' name='hiresign'".Replace("'hidden'", "'text'")

but when the code runs there is no change to the string.

**Edit

I found a solution with your guidance. I changed the code to:

tPage = tPage.Replace("<input type='hidden' name='hiresign'", "<input type='text' name='hiresign'")

Answer 1

&=将一个字符串连接到另一个字符串，您要替换该字符串：

tPage = "<input type='hidden' name='hiresign'".Replace("'hidden'", "'text'")

Answer 2

Try this

Dim str = "<input type='hidden' name='hiresign'"
str = str.Replace("'hidden'", "'text'")
tPage &= str 

The point is &= will concats the string in tPage and because of that you are not getting the replaced values corrctly. You have to first do the Replcae and then assign the value in tPage. Hope this helps.