how to add items to combo box from mysql database

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hi guys.. im having a problem here on adding items to a combo box.. for example i have a database.. i have which has a sample field of firstname,lastname.. now.. here's the problem.. i dont know how to get just the lastname field for an example.. here's my code..

C#

string query = "select * from customer_tab";
MySqlCommand cmd;

cmd = new MySqlCommand(query, conn);

MySqlDataAdapter da = new MySqlDataAdapter(cmd);
DataTable table = new DataTable("myTable");
da.Fill(table);

foreach (DataRow row in table.Rows)
{
     for (int i = 0; i < row.ItemArray.Length; i++)
     {
          comboBox1.Items.Add(row.ItemArray[1].ToString());

     }
}

Posted 31-May-13 4:02am

lalar18

Updated 31-May-13 4:30am

ZurdoDev

v2

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Comments

[no name] 31-May-13 10:08am

If all you want is the last name then why are you not just querying your database for the last name?

ZurdoDev 31-May-13 10:30am

We don't know where it is either because we can't see your database. Is the last name in the customer_tab table?

2 solutions

Solution 1

I think I would change the query to return only the last name if that's all you need, then set the combo box's DataSource to the query results rather than manually filling it.

Posted 31-May-13 9:06am

Marc A. Brown

Comments

lalar18 31-May-13 18:27pm

thanks for the code but still im having a problem when loading the code.. i have already changed the code.. the error says that "Complex DataBinding accepts as a data source either an IList or an IListSource.",thanks in advance..:)

Marc A. Brown 31-May-13 19:04pm

Try casting the DataSource to IListSource and calling the GetList() method. See also solution 2, which gives you some code.

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Scott A Parker · Accepted Answer · 2013-05-31T10:53:00

C#

//Change query to be a little more specific
 //=====================================================================
 string query = "select first_name from customer_tab";
 MySqlCommand cmd;
 
 cmd = new MySqlCommand(query, conn);
 
 MySqlDataAdapter da = new MySqlDataAdapter(cmd);
 DataTable table = new DataTable("myTable");
 da.Fill(table);
 
 
 //Use this
 //=====================================================================
 comboBox1.DataSource = da;
 comboBox1.DisplayMember = "first_name";
 //=====================================================================
 
 
 
 //Forget all of this
 //=====================================================================
 //foreach (DataRow row in table.Rows)
 //{
 //     for (int i = 0; i < row.ItemArray.Length; i++)
 //     {
 //          comboBox1.Items.Add(row.ItemArray[1].ToString());
 //
 //     }
 //}
 //=====================================================================