How we display database table one column values in comboBox in c# window application..tell me error in my code

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C#

con.Open();
         using (con)
         {
             SqlDataReader dr;
             dr = cmd.ExecuteReader();
             if (dr.HasRows)
             {
                 while (dr.Read())
                 {
                     T c = Activator.CreateInstance<t>(); //in generic class we activate instance
                     PropertyInfo[] p = typeof(T).GetProperties();
                    // foreach (PropertyInfo item in p)
                    // { }
                        // object o = dr[Item.Name];
                        
                            // item.SetValue(c, o, null);
                         Inventory inv = new Inventory();
                         inv.ItemId = Convert.ToInt32(dr["ItemId"]);
                         inv.ItemName = (dr["ItemName"]).ToString();
                         inv.ItemPrice = Convert.ToInt32(dr["ItemPrice"]);
                         inv.ItemQuantity = Convert.ToInt32(dr["ItemQuantity"]);
                         inv.ItemDescription = (dr["Itemdescription"]).ToString();

                         lst.Add(inv);                  

                 }
             }
             return lst;

Posted 3-Apr-14 20:56pm

Muhammad-Nauman-3

Updated 4-Apr-14 7:11am

Aarti Meswania

v2

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Member 10724147 · Answer 1 · 2014-04-04T04:59:00

use datatable and data adapter for that..

data adapter get the data.....datatable will hold the data...

for example dt is our datatable then the code is...

combobox1.datasource=dt;
combobox1.displaymemer="col here ";
combobox1.valuemember= "col here";

colhere is the column you want to display....

hope that answer the question

Aarti Meswania · Answer 2 · 2014-04-04T07:20:00

Solution 3

Hi, this way...

C#

combobox1.datasource = lst; //list you have filled from db
combobox1.DisplayMember = "ItemName";//name of column here (property) of list to be display 
combobox1.ValueMember = "ItemID";

Happy Coding!
:)

Posted 4-Apr-14 7:20am

Aarti Meswania

ZurdoDev · Answer 3 · 2014-04-04T02:09:00

I don't see your code to bind the combobox; however, the following link should help you. http://msdn.microsoft.com/en-us/library/x8ybe6s2(v=vs.90).aspx[^]

Setting the DisplayMember property to one of your columns will show that column and the ValueMember property to a different column if you need to.

jagan jan · Answer 4 · 2014-04-04T07:21:00

get the list data first

and then add a list in to

for update every signle value

C#

for(int i=0;i<=dt.rows.count;i++)
{
combox.items.add(dt.rows[0][i].tostring()

}

for bind a datasource to control

C#

combobox1.datasource=dt;
combobox1.displaymemer="col here ";
combobox1.valuemember= "col here";

How we display database table one column values in comboBox in c# window application..tell me error in my code

4 solutions

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