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Is it possible to assign programatically the combobox valuemember - item by item ?

Hi Experts!

Is it possible to assign programatically the valuemember - item by item on a combobox the valuemember ?

The reason is the first line must be empty.

     this.comboBox5.Items.Insert(0, "             ");

            for (int i = 1; i <= MyDT.Rows.Count; i++)
            {
                this.comboBox5.Items.Add(MyDT.Rows[i]["DESCRICAO"].ToString());

               // Item valuemember - just to ilustrate, this code doesn't run
                this.comboBox5.ValueMember = MyDT.Rows[i]["SB_PGE"].ToString();

            }

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Thanks in advance!

SOLUTION

dustock

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Angelp1ay

Assuming you're talking web:

     this.comboBox5.Items.Insert(0, "             ");

            for (int i = 1; i <= MyDT.Rows.Count; i++)
            {
                this.comboBox5.Items.Add(New ListItem(MyDT.Rows[i]["SB_PGE"].ToString(), MyDT.Rows[i]["DESCRICAO"].ToString()));
            }

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Eduardo Fuerte

ASKER

Hello

@dustock
Your solution doesn't work.... the first line is simply ignored when the combobox is filled.

@Angelplay
I'm using WebForms... any workaround to ListItem?

ASKER CERTIFIED SOLUTION

dustock

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Angelp1ay

ListItem should work fine in WebForms.

You need to ensure System.Web.UI.WebControls is in scope i.e. either

using System.Web.UI.WebControls;

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New System.Web.UI.WebControls.ListItem(text, value)

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Eduardo Fuerte

ASKER

@dustock
The code

            DataRow dtRow = MyDT.NewRow();
            dtRow["SB_PGE"] = 0;
            dtRow["DESCRICAO"] = "";
            MyDT.Rows.InsertAt(dtRow, 0);
            
            comboBox5.DataSource = MyDT;
            comboBox5.ValueMember = "SB_PGE";
            comboBox5.DisplayMember = "DESCRICAO";

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Works!

@AngelPlay
I referenced:
using System.Web;

ListItem still unavailable
What is the correct .net reference for it?

dustock

Well, glad I was able to help now :)

Angelp1ay

If dustock's method is working it's a cleaner solution.

System.Web.UI.WebControls (see above). Maybe at somepoint in the future if you have something more dynamic you might need to manually add listitems.

Eduardo Fuerte

ASKER

Pretty good solution!

Now my combobox is much more configurable than before.

Thanks for all!