在Visual Studio C＃中使用datetimepicker的正确语法代码是什么？

Question

Can anyone tell me what is the proper syntax code in using datetimepicker that would be saved directly to my Microsoft sql 2005? I'm using visual studio 2008 c#.

Here is my code:

private void button4_Click(object sender, EventArgs e)
{
    SqlConnection conn = new SqlConnection("Data Source=MJ-PC\\SQLEXPRESS;Initial Catalog=Users;Integrated Security=True");
    SqlDataAdapter dad = new SqlDataAdapter();
    // SqlCommand cmd = new SqlCommand();
    // cmd.Connection = conn;
    dateTimePicker1.Format = DateTimePickerFormat.Short;

    string dateStr = Convert.ToString(dateTimePicker1.Text);
    dad.InsertCommand = new SqlCommand("INSERT INTO tblSchools (School_Name, Province, City, Brgy, Lot_Num, Area, Mem_Date_Rec, Cenro) VALUES(@School_Name, @Province, @City, @Brgy, @Lot_Num, @Area, @Mem_Date_Rec, @Cenro", conn);
    dad.InsertCommand.Parameters.Add("@School_Name", SqlDbType.VarChar).Value = textBox1.Text;
    dad.InsertCommand.Parameters.Add("@Province", SqlDbType.VarChar).Value = comboBox1.Text;
    dad.InsertCommand.Parameters.Add("@City", SqlDbType.VarChar).Value = textBox2.Text;
    dad.InsertCommand.Parameters.Add("@Brgy", SqlDbType.VarChar).Value = textBox4.Text;
    dad.InsertCommand.Parameters.Add("@Lot_Num", SqlDbType.VarChar).Value = textBox5.Text;
    dad.InsertCommand.Parameters.Add("@Area", SqlDbType.Int).Value = textBox6.Text;
    dad.InsertCommand.Parameters.Add("@Mem_Date_Rec", SqlDbType.DateTime).Value = dateTimePicker1.Value.Date;
    dad.InsertCommand.Parameters.Add("@Cenro", SqlDbType.VarChar).Value = textBox8.Text;    

    conn.Open();
    dad.InsertCommand.ExecuteNonQuery();
    conn.Close();
}

The problem here is the datetimepicker, in my sql server Mem_Date_Rec is a datetime, so whenever I try to run it and save something on my database, dad.InsertCommand.ExecuteNonQuery(); Keeps on saying "Incorrect syntax near '@Cenro'."

Can anyone help me out here please, it would be a really great help.

Answer 1

I feel like you try to insert your parameter to dad.InsertCommand command not cmd command.

dad.InsertCommand.Parameters.Add("@Mem_Date_Rec", SqlDbType.DateTime).Value = dateTimePicker1.Value.Date;

Because your dad.InsertCommand has a parameter called @Mem_Date_Rec , not cmd . I have no idea what is your cmd for exactly. It's useless this case. You can't add a parameter value in an SqlCommand that doesn't have any parameter definition .

Also use using statement to dispose your SqlConnection and SqlCommand like;

using(SqlConnection conn = new SqlConnection(ConnectionString))
using(SqlCommand cmd = conn.CreateCommand())
{
   //
}

If you want to write a proper syntax code, you need start reading a book, articles, blogs, examples etc..

Answer 2

edit

You're missing something in your SQL. Change this:

> dad.InsertCommand = new SqlCommand("INSERT INTO tblSchools
> (School_Name, Province, City, Brgy, Lot_Num, Area, Mem_Date_Rec,
> Cenro) VALUES(@School_Name, @Province, @City, @Brgy, @Lot_Num, @Area,
> @Mem_Date_Rec, @Cenro", conn);

To this

dad.InsertCommand = new SqlCommand("INSERT INTO tblSchools (School_Name, Province, City, Brgy, Lot_Num, Area, Mem_Date_Rec, Cenro) VALUES(@School_Name, @Province, @City, @Brgy, @Lot_Num, @Area, @Mem_Date_Rec, @Cenro)", conn);

INSERT INTO table (columns) values (value)

you had: INSERT INTO table (columns) values (value