I have an activeX dll, I am calling one function from that
dll. I am using C# as coding language. I am getting
following error.
cannot convert from 'string' to 'ref string'
How do I call this function ?.
My statement is like this
CustomOutVal = CustObj.Authent icate(txtUserNa me.Text,
pass , Domain );
Regards,
Kishor
4  9041 
hi
try passing the strings as ref to the function
check this article http://www.codeproject.com/dotnet/cominterop.asp
regards
ansil
"kishor" wrote: I have an activeX dll, I am calling one function from that
dll. I am using C# as coding language. I am getting
following error.
cannot convert from 'string' to 'ref string'
How do I call this function ?.
My statement is like this
CustomOutVal = CustObj.Authent icate(txtUserNa me.Text,
pass , Domain );
Regards,
Kishor
kishor <ki****@discuss ions.microsoft. com> wrote: I have an activeX dll, I am calling one function from that
dll. I am using C# as coding language. I am getting
following error.
cannot convert from 'string' to 'ref string'
How do I call this function ?.
By specifiying the parameter as "ref" as well.
See http://www.pobox.com/~skeet/csharp/parameters.html
--
Jon Skeet - <sk***@pobox.co m> http://www.pobox.com/~skeet
If replying to the group, please do not mail me too
Which of the parameters is supposed to be passed by ref?? If it is the first
parameter (txtUserName.Te xt) then you will need to create another string
variable, set it = to txtUserName.tex t and pass that into the call. The
reason for this is that properties cannot be used as reference parameters..
To top this off, when calling a method that has a ref parameter, specify the
ref keyword..
an example would be (if the first parameter is the ref parameter):
string tempUserName = txtUserName.Tex t;
CustomOutVal = CustObj.Authent icate(ref tmpUserName,
pass , Domain );
Hope this helps
Eddie de Bear
"kishor" wrote: I have an activeX dll, I am calling one function from that
dll. I am using C# as coding language. I am getting
following error.
cannot convert from 'string' to 'ref string'
How do I call this function ?.
My statement is like this
CustomOutVal = CustObj.Authent icate(txtUserNa me.Text,
pass , Domain );
Regards,
Kishor
Thanks,
problem solved
Kishor
"Eddie de Bear" wrote: Which of the parameters is supposed to be passed by ref?? If it is the first
parameter (txtUserName.Te xt) then you will need to create another string
variable, set it = to txtUserName.tex t and pass that into the call. The
reason for this is that properties cannot be used as reference parameters..
To top this off, when calling a method that has a ref parameter, specify the
ref keyword..
an example would be (if the first parameter is the ref parameter):
string tempUserName = txtUserName.Tex t;
CustomOutVal = CustObj.Authent icate(ref tmpUserName,
pass , Domain );
Hope this helps
Eddie de Bear
"kishor" wrote:
I have an activeX dll, I am calling one function from that
dll. I am using C# as coding language. I am getting
following error.
cannot convert from 'string' to 'ref string'
How do I call this function ?.
My statement is like this
CustomOutVal = CustObj.Authent icate(txtUserNa me.Text,
pass , Domain );
Regards,
Kishor This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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