How to add new item in Combobox..

[crsqn91l]

Hi Friends... i error while i m adding new item "Create New" into Combobox which is already binded by one datasource using datatable with valuemember.

plz help me in solving how to add new item into combobox which already databinded by datatable.

[bharathreddy]

hai,

Best way is to add the value to the datatable itself and assign this datasource/table to the Combobox once again.

Thanks & Regs
Bharath Reddy VasiReddy.

[dip_developer]

Hi Friends... i error while i m adding new item "Create New" into Combobox which is already binded by one datasource using datatable with valuemember.

plz help me in solving how to add new item into combobox which already databinded by datatable.

If you try to add items to a ComboBox that was bound, an ArgumentException is thrown, saying that "Cannot modify the Items collection when the DataSource property is set".

First you do your adding of item to datatable then bind it as datasource.

no other way of doing this.

[crsqn91l]

Thnx for reply....my problem is .. i binded combobox with datasource, displymember and valuemember using single table.... i want to display [create New] text with the binded data in same combobox....

[prabunewindia]

hi friend,
u can create a new ListItem and insert at the first(index 0) position
example:
ListItem createNew = new ListItem("text", "value");
dropdownlist.Items.Insert(0, createNew);
Prabu

Thnx for reply....my problem is .. i binded combobox with datasource, displymember and valuemember using single table.... i want to display [create New] text with the binded data in same combobox....

[Plater]

I would suggest not binding the combo box directly.
Instead, collect your datasource (a datatable or dataset maybe?)
And then itterate through it adding them to the combobox.
Then you are free to add and remove more entries as you please.

[crsqn91l]

hi everyone,

this is what i m using..code...plz read... with this i m inserting new text into the combobox which assigned by datasource, datamember and valuemember. here i m not getting value member to my new text.... i want to add this as new item not a new text...


public struct State
{
private string _shortName, _longName;

public State(string longName, string shortName)
{
this._shortName = shortName;
this._longName = longName;
}

public string ShortName { get { return _shortName; } }
public string LongName { get { return _longName; } }
}
public State[] States = new State[] {
new State("Create","0")

} ;


private void bind()
{
DataTable dataemp;
dataemp= obj.getempid();
COB_Employeeid.DataSource = dataemp;
COB_Employeeid.DisplayMember = "Employee_Name";
COB_Employeeid.ValueMember = "Employee_ID";
COB_Employeeid.DataBindings.Clear();
COB_Employeeid.DataBindings.Add("Text", States, "LongName");
}

[crsqn91l]

any one thr who can solve above problem...