Error in arraylist combobox

Question

2.30/5 (3 votes)

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Dear All,

I want to select the item from the database through arraylist but the item not showing in the combobox. what is the error in my program please tell me.

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        
        public Form1()
        {
            InitializeComponent();
            cmboItemType();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
        }
        private void cmboItemType()    //for combobox 
        {
            string connstr = @"Server=.\SQLEXPRESS ;Initial Catalog=RPSJDB;Integrated Security=True; Max Pool Size=100";
            SqlConnection conn = new SqlConnection(connstr);
            SqlCommand cmd = new SqlCommand("SELECT cmbItemType FROM ItemTable", conn);
            conn.Open();
            SqlDataReader sdr = cmd.ExecuteReader();
            ArrayList ItemStore = new ArrayList();
            while (sdr.Read())
            {
                ItemStore.Add(sdr.ToString());
            }
            sdr.Close();
            conn.Close();
        }
}
}
        }

Posted 6-Sep-13 19:05pm

Manish Arya

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Comments

Sergey Alexandrovich Kryukov 7-Sep-13 1:31am

There is no a single mention of the type ComboBox in this code sample. Don't you think it's weird to ask about ComboBox functionality problem if you don't show any?
—SA

2 solutions

Solution 2

i am not sure but first check ur query in sql server that u have given in sqlCommand weather its returning values

if not check the column name and table name

if all this are right then check cataloge name in connection string means ur database name

Posted 6-Sep-13 23:05pm

Salman622

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Nandkumar Sharma · Accepted Answer · 2013-09-06T19:55:00

C#

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        
        public Form1()
        {
            InitializeComponent();
            cmboItemType();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
        }
        private void cmboItemType()    //for combobox 
        {
            string connstr = @"Server=.\SQLEXPRESS ;Initial Catalog=RPSJDB;Integrated Security=True; Max Pool Size=100";
            SqlConnection conn = new SqlConnection(connstr);
            SqlCommand cmd = new SqlCommand("SELECT cmbItemType FROM ItemTable", conn);
            conn.Open();
            SqlDataReader sdr = cmd.ExecuteReader();
            ArrayList ItemStore = new ArrayList();
int i=0;
            while (sdr.Read())
            {

                ItemStore.Add(sdr[i].ToString());
i++;
            }
            sdr.Close();
            conn.Close();
        }
    }
}
}

Check this..............
http://stackoverflow.com/questions/256832/c-sharp-fill-a-combo-box-with-a-datatable[^]