how to concatenate string?

Vikas Ahlawat

             public static string sqlquary;
            sqlquary = "Select * from Student_Fee_Payment_Detail where";

            if (radioButton1.Checked == true)
            {
                sqlquary = sqlquary + "class";
            }

            MessageBox.Show(sqlquary);

how can i do under if statement. that it show effict.

10 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sam Hobbs16y ago
Instead of:

sqlquary = string.Concat(sqlquary, "class");

You could use instead:

sqlquary += "class";
0
Vikas Ahlawat16y ago
Thanks to all of you for help me.

The problem in my project i m using checkbox and radiobutton both and in code i m using radiobutton which is not selected so it is giving this answer.
i always see checkbox.
So it is solved.
Thanks again.
0
Raaj Kumar16y ago
Try rebuilding the application or else send me you application if possible such that I can give a try

Regards,
raaj
0
Vikas Ahlawat16y ago
ya this is working but in my project it not working.
when i try in new window application then it is working.
0
Raaj Kumar16y ago
Hi,

I have tested this in windows forms application. I am attaching the sample code please check it.

Regards,
raaj
0
Vikas Ahlawat16y ago
@Raaj Kumar
string sqlquary;
            sqlquary = "Select * from Student_Fee_Payment_Detail where";

            if (radioButton1.Checked == true)
            {
                 sqlquary = string.Concat(sqlquary, "class");
            }

            MessageBox.Show(sqlquary);

this is not working for me.
messagebox only showing Select * from Student_Fee_Payment_Detail where
0
Raaj Kumar16y ago
Hi,

Try this,

sqlquary = "Select * from Student_Fee_Payment_Detail where";

            if (RadioButton1.Checked == true)
            {
                sqlquary = string.Concat(sqlquary, "class");
            }

This works for me.


Regards,
raaj
0
Vikas Ahlawat16y ago
hi
i know s=string.Concat(sqlquary, "class"); and &
my problem is that if i con... string under if statement then it give no result, and if i do same outside the if statement that it working.
0
kiran kumar16y ago
this way you can do
string s = "";
s=string.Concat(sqlquary, "class");
mark the answer if it helps you
0
vijay antony16y ago
please try it as below;
{
sqlquary = sqlquary & "class";
}

regards
vijay
0