C# How Can i reload datagridview like first load form after search with reset button

Question

I have a few TextBox es and I use this code for textchange events to search:

DataView dvTelbook = dtTelbook.DefaultView;
dvTelbook.RowFilter = "[name] LIKE '%" + textBox.Text + "%'";

That code works well and when I use that TextBox to search in a DataGridView (filtered by name) it works so far.

My problem is:

When I click the reset button, the DataGridView can't reload.
I want to reload the DataGridView after search, exactly like when first loading the Form .

But datagridview.refresh(); does not work and datagridview.datasource = "null" clears my DataGridView . And when I use datagridview.datasource = mydata(); the DataGridView loads again but all data is duplicated.

Any suggestions?

Answer 1

To stop the duplication, do:

datagridview.datasource = "null"

followed by:

datagridview.datasource = mydata();

Answer 2

i find solution .

see my reset form code :

      private void button3_Click(object sender, EventArgs e)
    {

        textBox1.Clear();
        textBox4.Clear();
        textBox5.Clear();
        textBox6.Clear();

             // this line work and clear my datagrid view
           dataGridView1.Columns.Clear(); 
              //this line cant work and my datagridview is blank                
            dataGridView1.DataSource = mydata();

    }

that code is wrong . i use this code as solution :

i use this private DataTable myname = new DataTable(); after that : i use myname.Reset(); in button 3 click.

see button3 click code :

  textBox1.Clear();
        textBox4.Clear();
        textBox5.Clear();
        textBox6.Clear();

          myname.Reset();
            dataGridView1.DataSource = mydata(); 
            DataView test = myname.DefaultView;
            test.RowFilter = string.Empty;

and done . my result refresh good and dont duplicated .

good luck