Cannot convert method group 'Trim' to non-delegate type 'int'

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My code as follows;

C#

string str = "Select count(*) from Student where studid=@studid;";
SqlCommand cmd = new SqlCommand(str, SCon.Con);
cmd.Parameters.AddWithValue("studid", (int)txt_Studid.Text.Trim);
int count = (int)cmd.ExecuteScalar();

when i run the above code shows error as follows;

Cannot convert method group 'Trim' to non-delegate type 'int'. Did you intend to invoke the method?

what is the problem in my above code.

Error shows in following line

C#

cmd.Parameters.AddWithValue("studid", (int)txt_Studid.Text.Trim);

Posted 30-Apr-13 20:46pm

Member 8054539

Updated 1-May-13 0:42am

Kenneth Haugland

v4

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[no name] 1-May-13 8:01am

Trim is a method not a property

2 solutions

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Leo Chapiro · Answer 1 · 2013-04-30T20:56:00

Solution 1

1. Trim is a method: use rather txt_Studid.Text.Trim() as ~~txt_Studid.Text.Trim~~
2. Trim's return value is rather string as int: use

C#

string str = txt_Studid.Text.Trim();

3. To convert string to integer use:

C#

int a = Convert.ToInt32(str);

Good luck, dude!

Posted 30-Apr-13 20:56pm

Leo Chapiro

Hitesh Gohel · Answer 2 · 2013-05-01T00:53:00

Solution 3

Hello,
Please try this code..

string str = "Select count(*) from Student where studid=@studid;";
SqlCommand cmd = new SqlCommand(str, SCon.Con);
cmd.Parameters.AddWithValue("studid", (int)txt_Studid.Text.Trim());
int count = (int)cmd1.ExecuteScalar();

Posted 1-May-13 0:53am

Hitesh Gohel