Fill ComboBox From Sql Server On C#

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please help me... i want fill ComboBox from database sql server and i use this code below but can't works..

C#

protected void FillComboBox()
    {

            SqlDataAdapter da = new SqlDataAdapter("SELECT ItemName FROM TBItemList", oSqlConn);
            DataTable dt = new DataTable();
            da.Fill(dt);
            {
                cbxparameter.Items.Add(dt.ToString());
            }

    }

then to make sure my code, i'm try to bug and in my bug i'm can't know where the trouble.. because all normal, Why ?

Posted 13-Jan-15 20:48pm

Member 11057420

Updated 28-Jun-21 21:13pm

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DamithSL · Accepted Answer · 2015-01-13T21:03:00

set the data source as your data table and then you can specify the column which you want to display and the value of the item as below

C#

SqlDataAdapter da = new SqlDataAdapter("SELECT ItemName FROM TBItemList", oSqlConn);
DataTable dt = new DataTable();
da.Fill(dt);
cbxparameter.DataSource=dt;
cbxparameter.DisplayMember="ItemName";
cbxparameter.ValueMember="ItemName";

Jeet Gupta · Accepted Answer · 2015-01-14T01:17:00

You can fill combo box in two ways.. either by using the datasource property or by using the for loop to fill.

1st Way - Data source Property

C#

SqlDataAdapter da = new SqlDataAdapter("SELECT ItemName FROM TBItemList", oSqlConn);
DataTable dt = new DataTable();
da.Fill(dt);
cbxparameter.DataSource=dt; // setting the datasource property of combobox
cbxparameter.DisplayMember="ItemName"; // Display Member which will display on screen
cbxparameter.ValueMember="ItemID"; //ID Member using which you will get the selected Item ID

2nd Way - For Loop

C#

SqlDataAdapter da = new SqlDataAdapter("SELECT ItemName FROM TBItemList", oSqlConn);
DataTable dt = new DataTable();
da.Fill(dt);
for(int i=0;i<dt.rows.count;i++)
{
    cbxparameter.Items.Add(dt.rows[i]["ItemName"].toString());
}

Fill ComboBox From Sql Server On C#

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