Dropdown list populate from database

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i am trying to fill my dropdown list with certain values from the data base but i am having some problem with the codes can someone tell me where i am doing it wrong?

What I have tried:

C#

protected void Page_Load(object sender, EventArgs e)
{
     fillDDl();
}

void fillDDl()
{
    SqlConnection con = new SqlConnection("Data Source=MICKEY\\SQLEXPRESS;Initial Catalog=rr;Integrated Security=True");
    string query = "select * from rr.itemMaster";
    SqlCommand com = new SqlCommand(query, con);
    SqlDataReader sdr = new SqlDataReader();
    try
    {
       con.Open();
       sdr = com.ExecuteReader();
       while(sdr.Read())
       {
           string sName = sdr.GetString("itemName");
           olDDLItem.Items.Add(sName);
       }
    }
    catch(Exception ex)
    {
        olResult.Text = "successfull";
    }
}

Posted 13-Mar-16 20:01pm

Member 12355460

Updated 3-May-16 5:41am

VR Karthikeyan

v2

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Comments

Kats2512 14-Mar-16 2:26am

refer to this link, it should be able to sort your issue as it shows what you need to do step by step. also you are not setting the value and text for the drop down list.

http://www.aspsnippets.com/Articles/Bind-Fill-Populate-DropDownList-control-from-database-in-ASPNet-using-C-and-VBNet.aspx

Member 12355460 14-Mar-16 2:34am

any other sugesstions

Member 12355460 14-Mar-16 3:12am

i found it..
olDDLItem.Items.Add(sdr[0].ToString());
this is working now. thank you

ZurdoDev 1-Apr-16 15:24pm

Then please post something as a solution so this no longer shows unanswered.

And next time, explain what the problem is.

Karthik_Mahalingam 3-May-16 20:06pm

Please close this post.

2 solutions

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Mohideenmeera · Answer 1 · 2016-05-03T05:30:00

I have used Stored Procedure to get the records from DB.
Use SP instead of writing query in Application.
Below is the code:

C#

public DataTable retrievevalues()
        {
             SqlCommand cmd = new SqlCommand("StoredProcedure", sqlconn);
             cmd.Parameters.AddWithValue("@userid", username);
             cmd.CommandType = CommandType.StoredProcedure;
             sqlconn.Open();
             SqlDataReader dr = cmd.ExecuteReader(System.Data.CommandBehavior.Default);
             DataTable dt = new DataTable();    
             dt.Load(dr);
             return dt;
        }
---------------

-----------------------------------

C#

ComboBox1.DataSource = retrievevalues();

--------------------------------------------------

Mohideenmeera · Answer 2 · 2016-05-03T05:41:00

Second Way - By Iteration

C#

public DataTable retrievevalues()
{
SqlCommand cmd = new SqlCommand("StoredProcedure", sqlconn);
cmd.Parameters.AddWithValue("@userid", username);
cmd.CommandType = CommandType.StoredProcedure;
sqlconn.Open();
SqlDataReader dr = cmd.ExecuteReader(System.Data.CommandBehavior.Default);
DataTable dt = new DataTable(); 
dt.Load(dr);
return dt;
}

NOTE: @userid is an Stored Procedure Variable you can ignore that.
-----------------------------------------------------

C#

DataTable DT = new DataTable();
DT = retrievevalues();

            foreach (DataRow row in DT.Rows)
            {
combobox1.items.add(row["SQL ColumnName"].ToString()
            }
)

-----------------------------------------------------

Dropdown list populate from database

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