how to add custom option to a binded combobox

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C#

protected void BindCat()
{
        ddlCategory.DataSource=objProdCat.SelectAll();
        ddlCategory.DisplayMember = "ProductCatName";
        ddlCategory.ValueMember = "ProductCatId";
        ddlCategory.Items.Insert(0, "Add new Category"); 
        //MessageBox.Show(ddlCategory.SelectedValue.ToString()); 
}

I want to add a custom option to a already bound combobx but this is not working. It is now showing me values 1,2,3,4,5

How to add a custom field to a already bound combobox?

Posted 25-Apr-14 23:06pm

Muhamad Faizan Khan

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sankarsan parida · Accepted Answer · 2014-04-25T23:15:00

Solution 1

You could either add the default text to the Text property of the combobox like this (preferred):

ddlCategory.Text = "Add new Category";

Or, you could add the value to the datatable directly:

if you are using datatable

da.Fill(dt);
DataRow row = dt.NewRow();
row["Category"] = "Add new Category";
dt.Rows.InsertAt(row, 0);
ddlCategory.DataSource = dt;
}

if you are using list of class

objProdCat=getinglist
objProdCat.Insert(0,"Add new Category");
ddlCategory.DataSource=objProdCat.SelectAll();

Posted 25-Apr-14 23:15pm

sankarsan parida

Updated 26-Apr-14 0:54am

v2

Comments

Muhamad Faizan Khan 26-Apr-14 6:42am

da.Fill(dt);
DataRow row = dt.NewRow();
row["Category"] = "Add new Category";
dt.Rows.InsertAt(row, 0);
ddlCategory.DataSource = dt;
}
this is not showing any thing in combobx

[no name] 26-Apr-14 6:56am

what do you mean?<br>
Have you checked there "Add new category" is available in 0 index of dt, or not?