C# Access insert error !

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                      OleDbConnection con = new OleDbConnection();
           con.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0; Data Source=" + Application.StartupPath + "\\kodmatikdatabase.accdb";

con.Open();
           OleDbCommand sorgu = new OleDbCommand(("insert into geneltablo (KodAdi,Aciklama,GirisTarihi,Link,ProgramlamaDili,Puan,Durum) values (@KodAdi,@Aciklama,@GirisTarihi,@Link,@ProgramlamaDili,@Puan,@Durum)"),con);
           sorgu.Parameters.AddWithValue("@KodAdi", textBox1.Text);
           sorgu.Parameters.AddWithValue("@Aciklama", richTextBox1.Text);
           sorgu.Parameters.AddWithValue("@GirisTarihi", dateTimePicker1.Text);
           sorgu.Parameters.AddWithValue("@Link", textBox2.Text);
           sorgu.Parameters.AddWithValue("@ProgramlamaDili", comboBox1.Text);
           sorgu.Parameters.AddWithValue("@Puan", comboBox3.Text);
           sorgu.Parameters.AddWithValue("@Durum", comboBox2.Text);


           sorgu.ExecuteNonQuery();

when i push button

" sorgu.ExecuteNonQuery(); " in this line

always give me this error

"Data type mismatch in criteria expression."

What is wrong ? :confused::confused::confused:

Posted 31-Jul-10 4:43am

kozmikadam

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Roger Wright · Accepted Answer · 2010-07-31T04:57:00

I suspect the problem is here:

sorgu.Parameters.AddWithValue("@GirisTarihi", dateTimePicker1.Text);

If the target field is a datetime value in the Access database, this will cause an error. You'll need to cast this value to a datetime before you add the parameter. Additionally, if any of the other parameters are numeric values in the database, you'll need to cast the xx.Text value into the appropriate numeric type.