date conversion problem

Question

5.00/5 (1 vote)

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here is my code................

C#

private void dateTimePicker1_Leave(object sender, EventArgs e)
        {
            SqlConnection con = Conn.getopenedconnection();

            SqlCommand cmd = con.CreateCommand();
            cmd.CommandType = CommandType.Text;
            cmd.Connection = con;
            DateTime date1 = Convert .ToDateTime(dateTimePicker1.Text) ;
            string date11 = date1.ToShortDateString();
            cmd.CommandText = ("SELECT itemcode,maturity FROM SAUDAMAST WHERE COMPCODE='" + Compcls.Gcomp_cd + "'and itemcode='"+comboBox1.SelectedValue+"' and maturity='"+date11+"'");
            SqlDataReader sdr = cmd.ExecuteReader();
            int count = 0;
            while (sdr.Read())
            {
                count = 1;
            }

            if (count > 0)
            {


                MessageBox.Show("Sauda already exists this comodity and this date");
                dateTimePicker1.Focus();
              
            }
        }

but i get error=The conversion of char data type to smalldatetime data type resulted in an out-of-range smalldatetime value.

please help me what i have to do......

thanks and regards
lakhan

Posted 23-Dec-11 23:01pm

Lakhan Aanjana

Updated 23-Dec-11 23:03pm

Monjurul Habib

v2

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Comments

Amir Mahfoozi 24-Dec-11 5:18am

In which line you have got error ?

[no name] 24-Dec-11 5:19am

while (sdr.Read())

4 solutions

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Monjurul Habib · Accepted Answer · 2011-12-23T23:08:00

Solution 1

Try following:
Insert DateTime into SQL Server using C#
Call stored procedure with parameters using SqlCommand
Still problems inserting dates in DB

Posted 23-Dec-11 23:08pm

Monjurul Habib

Comments

Abhinav S 24-Dec-11 5:26am

Link should help OP. 5.

Monjurul Habib 24-Dec-11 5:32am

thank you

Yoavi · Accepted Answer · 2011-12-23T23:14:00

Solution 2

try:

SQL

cmd.CommandText = ("SELECT itemcode,maturity FROM SAUDAMAST WHERE COMPCODE=@COMPCODE and itemcode=@itemcode and maturity=@maturity");
       cmd.Parameters.AddWithValue("@COMPCODE", Compcls.Gcomp_cd);
       cmd.Parameters.AddWithValue("@itemcode", comboBox1.SelectedValue);
       cmd.Parameters.AddWithValue("@maturity", date1);

Posted 23-Dec-11 23:14pm

Yoavi

Updated 23-Dec-11 23:17pm

v2

Comments

[no name] 24-Dec-11 5:27am

but i get error.......Arithmetic overflow error converting expression to data type smalldatetime.

Abhinav S · Accepted Answer · 2011-12-23T23:22:00

Solution 3

Try debugging through code - the error is probably on this line.
Convert .ToDateTime(dateTimePicker1.Text) ;

Try using the TryParse method to ensure the value is of DateTime type before trying to convert it.

Posted 23-Dec-11 23:22pm

Abhinav S

Comments

Monjurul Habib 24-Dec-11 5:25am

5!

Abhinav S 24-Dec-11 5:26am

Thank you.

Wendelius · Accepted Answer · 2011-12-23T23:30:00

Solution 4

Never concatenate values to the SQL statement, instead use SqlParameter[^].

With parameters you don't have to worry about type conversions (something to text) and they'll work with different locales, not to mention that they will protect you from SQL injections.

Posted 23-Dec-11 23:30pm

Wendelius