How To Fill Text Box Data From Select Statement?

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C#

SqlDataAdapter sda2 = new SqlDataAdapter("SELECT max(id)+1 FROM [TBL_CATEGORYCUSTOMERS]  ", sqlcon);
DataTable dt3= new DataTable();
sda2.Fill(dt3);

I need to insert this data to:

C#

textbox.Text;

Posted 6-Dec-14 5:02am

Member 11280947

Updated 6-Dec-14 5:09am

DamithSL

v3

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DamithSL · Answer 1 · 2014-12-06T05:08:00

Solution 1

you can use ExecuteScalar method

C#

using (var cmd = new SqlCommand("SELECT max(id)+1 FROM [TBL_CATEGORYCUSTOMERS] ", sqlcon))
{
    conn.Open();
    textbox.Text = cmd.ExecuteScalar().ToString();

}

Posted 6-Dec-14 5:08am

DamithSL

/\jmot · Answer 2 · 2014-12-06T05:19:00

correct first..

SQL

SELECT max(isnull(id,0))+1 FROM [TBL_CATEGORYCUSTOMERS]

And Your answer is according to your procedure, eventually that is a wrong produce....

C#

if(dt3.Rows.Count>0)
{
textbox.Text=dt3.rows[0][0].tostring();
}

you are using the wrong procedure to select the max Id.
For simplest procedure see @DamithSL solution..