i want to add an empty string/blank to index[0] in combobox, the problem is that combobox is databound.

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i want to add an empty string/blank to index[0] in combobox, the problem is that combobox is databound.I want to display items starting from index[1].

Posted 16-Dec-13 23:12pm

uditCsharp

Updated 16-Dec-13 23:14pm

v2

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2 solutions

Solution 2

C#

clsOrder oOrder = new clsOrder();
        IDataReader iDr = oOrder.GetReason();
        ddlReason.Items.Clear();
        ddlReason.SelectedValue = null;
        ddlReason.DataSource = iDr;
        ddlReason.DataTextField = "ReasonName";
        ddlReason.DataValueField = "ReasonId";
        ddlReason.DataBind();

        iDr.Close();
        iDr.Dispose();
        ddlReason.Items.Insert(0, new ListItem(" ", ""));

It will help you

Posted 17-Dec-13 0:20am

Renuka Ruke

Updated 17-Dec-13 1:39am

v3

Comments

Karthik_Mahalingam 17-Dec-13 6:25am

HI Renuka
whenever you are posting an answer, add it inside the code block,
it will be easier for the user to understand the code in single look..

Renuka Ruke 17-Dec-13 6:47am

ok and thanks

Karthik_Mahalingam 17-Dec-13 7:56am

Good, welcome :)

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Karthik_Mahalingam · Accepted Answer · 2013-12-16T23:23:00

Hi Try like this,
You cannot modify the Items , once it is databound.
option is , you can modify the data source as below.

C#

// Trying with List
            List<string> lst = new List<string>();
            lst.Add("one");
            lst.Add("two");
            lst.Add("three");
            lst.Insert(0, "");
            comboBox1.DataSource = lst;


            // Trying with DataTable
            DataTable dt = new DataTable ();
            dt.Columns.Add("Numbers", typeof(string));
            dt.Rows.Add("one");
            dt.Rows.Add("two");
            dt.Rows.Add("three");
            DataRow newrow = dt.NewRow();
            newrow["Numbers"] ="";
            dt.Rows.InsertAt(newrow, 0);
            comboBox1.DataSource = dt;
            comboBox1.DisplayMember = "Numbers";</string></string>