error CS0029:Cannot implicitly convert type 'int' to 'bool'

while ((System.Convert.ToInt32(strupcolid)!=0));

where is the problem

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error CS0029:Cannot implicitly convert type 'int' to 'bool'

Drew Marsh
What type is strupcolid Are you sure that's the line that's causing your problem That particular line of code should compile just fine assuming strupcolid is a string.

Regards,

Donavan Hoepcke
FandangoAmeruso

Dear all,

thank you very much for your advice.

I am very sorry to say that due to carelessness or other reasons, I mistakingly regard this line as error line.

Actually the error line is:

for (int j=arrcolid.Length-1;j=0;j--) //<--error line
{
path += "<a href=article/" + arrcolid[j] + ".htm>" + arrcolname[j] + "</a>>>";
}
AndrewBadera

I don't know what you are doing wrong, but the following code does NOT generate the error for me:

static void Main(string[] args)
{
string strupcolid = "0";
while ((System.Convert.ToInt32(strupcolid)!=0))
;
}
anydobbo

James, thks!

= and ==, haha, I am too careless to mind the difference.

thks again!
Luke Breuer

>> for (int j=arrcolid.Length-1;j=0;j--)

Well, that's easy.

j=0 is an assignment, which evaluates to 0 (int)

j==0 is a comparison, which evaluate to t/f (bool)
Jim Stockwell

while ((System.Convert.ToInt32(strupcolid)!=0));

Why does this line end in a semicolon, is this watching something in another thread If so, there are much better ways to do that.

As someone said, this line cannot cause that error, not as it's posted here. != will return a bool. You could try breaking it up into more than one line, and see where the problem is then.
error CS0029:Cannot implicitly convert type 'int' to 'bool'

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