CODEWITHSUNDEEP
datagridviewrefresh
hanuman0503
hanuman0503

Reputation: 219

Refresh datagridview in windows form application

I have a form with datagridview and a List like this:

private void Form1_Load(object sender, EventArgs e)
        {
            List<Person> list = new List<Person>();
            list.Add(new Person("A", "An Giang"));
            list.Add(new Person("B", "TP HCM"));
            list.Add(new Person("C", "Tiền Giang"));
            list.Add(new Person("D", "Cần Thơ"));

            this.dataGridView1.DataSource = list;

            list.Add(new Person("E", "Bạc Liêu")); // --> changed

            this.dataGridView1.EndEdit();
            this.dataGridView1.Refresh();
            this.Refresh();
            this.dataGridView1.Parent.Refresh();
        }

My problem is the datagridview didn't show the new row although its Datasource had changed. I try to refresh the datagrid but it did not work.

Upvotes: 1

Views: 7762

Answers (4)

Morteza
Morteza

Reputation: 444

Use this it worked for me:

qTableAdapter.Fill(_11DataSet.q);

Upvotes: 1

hanuman0503
hanuman0503

Reputation: 219

Answer my question. I've tried to use a BindingList<Person> instead of List<Person> and the problem solved.

Upvotes: 0

p.campbell
p.campbell

Reputation: 100647

A quick hack shows that this will rebind as you expect with your List<t>:

...
list.Add(new Person("E", "Bạc Liêu")); // --> changed

dataGridView1.DataSource = null;
dataGridView1.DataSource = list;

Consider refactoring to use a BindingList<Person> instead of the List<Person>, which will perform as you expect, and you'll require none of the code to refresh. Implement this change, and all the code after inserting Person E can be deleted.

Upvotes: 1

Will A
Will A

Reputation: 25018

Check out BindingList<T>, this is a list that supports databinding and as such it fires off events when the collection is modified.

Upvotes: 3

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