List box filtering

Question

I have a listbox and have bound it to a datatable in a dataset.
I want to let the user type part of a word and have the list box filter the items according to that.
is there any way to do that?
do I need to work on the listbox itself or the datatable to achieve it?
thanks in advance.
      Anoosh

Answer 1

Hi anoushiravan,
I load the ListBox like below.
private void Form1_Load(object sender, EventArgs e)
dt.Clear();
dt.Columns.Add("Name");
dt.Columns.Add("Marks");
DataRow r1 = dt.NewRow();
r1["Name"] = "ravi";
r1["Marks"] = "500";
dt.Rows.Add(r1);
DataRow r2 = dt.NewRow();
r2["Name"] = "dadavse";
r2["Marks"] = "500";
dt.Rows.Add(r2);
DataRow r3 = dt.NewRow();
r3["Name"] = "nnnn";
r3["Marks"] = "500";
dt.Rows.Add(r3);
DataRow r4 = dt.NewRow();
r4["Name"] = "ee";
r4["Marks"] = "500";
dt.Rows.Add(r4);
DataRow r5 = dt.NewRow();
r5["Name"] = "reas";
r5["Marks"] = "500";
dt.Rows.Add(r5);
DataRow r6 = dt.NewRow();
r6["Name"] = "tyjns";
r6["Marks"] = "500";
dt.Rows.Add(r6);
this.listBox1.DataSource = dt;
this.listBox1.DisplayMember = "Name";
Filter the listBox with TextChanged event like below.
I filter the listBox by filtering the DataTable.
private void textBox1_TextChanged(object sender, EventArgs e)
DataView dv = dt.DefaultView;
dv.RowFilter = "Name like '%"+this.textBox1.Text+"%'"; //the Name is the Column name in DataTable
this.listBox1.DataSource = null;
this.listBox1.DataSource = dv;
this.listBox1.DisplayMember = "Name";
The Result:
If you have any other concern regarding this issue, please feel free to let me know.
Best regards,
Youjun Tang
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