How to Combobox 0 Position Item Insert in WPF

Bhavesh Ghul

7y3.4k

How do this daynamic data bind in combobox with [value = 0 & Text = --Select Item--] Add item in Wpf

5 Replies

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Amit Gupta7y ago
Accepted answer
@Bhavesh

As mentioned, you can only use the below code
cbbcustomer.Items.Insert(0, "--Select--");

when you are adding items by using

cbbcustomer.Items.Add(...);

As you are using binding, you can only make changes to the data source like below
mds = mfun.showData("select cust_id, name from customer order by name asc");

var table= mds.Tables[0];
var row = table.NewRow();
row["cust_id"] = -1;
row["name"] = "--Select--";
table.Rows.InsertAt(row, 0);
Do let me know, if its solves your problem
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Bhavesh Ghul7y ago
Hello Salman Sir..

i try it this code, but one error generate so please guide me, and why throw this error suggeste me.
private void Cbbcustomer_Loaded(object sender, RoutedEventArgs e)
        {
            mds = new DataSet();
            mds = mfun.showData("select cust_id, name from customer order by name asc");
            cbbcustomer.ItemsSource = mds.DefaultViewManager;
            cbbcustomer.DisplayMemberPath = "name";
            cbbcustomer.SelectedValuePath = "cust_id";
            cbbcustomer.Items.Insert(0, "--Select--");
        }
Error :  System.InvalidOperationException: 'Operation is not valid while ItemsSource is in use. Access and modify elements with ItemsControl.ItemsSource instead.'
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Jignesh Kumar7y ago
Please try below link,

https://stackoverflow.com/questions/23130763/wpf-combobox-defaultvalue-please-select

https://social.msdn.microsoft.com/Forums/vstudio/en-US/570a20dd-1180-402a-8281-78b1d3d6d3e2/wpf-default-text-in-combo-box?forum=wpf
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Amit Gupta7y ago
If the data is binded dynamically, you can insert -- select-- text to the datasource (datatable)
0
Salman Beg7y ago
Hi.
you can try like this,
myComboBox.Items.Insert(0, "--Select Item--");
Thanks.
0