dotnet windows forms databinding: I have a dataset bound listbox with items that I want to give the user the
ability to reorder.

For some reason... unknown right now... the listbox does not properly update
from the dataset when I update the dataset... even after I accept changes
and write the dataset out to XML.

When I dump the dataset to the Console the data appears to be in the correct
order.

What method would I called to tell the ListBox to refresh from the dataset?

Hi eXtreme,

Thanks for your post.

First, do you use ListView or ListBox in your application? You mentioned
ListView in the post title, however, ListBox in the content. Currently, I
assume you use ListBox.

Normally, we can re-order the databinding with setting a sort expression in
DataView.Sort property. I have writen a little sample project for your
scenario, however, it works well for re-ordering and updating. Code snippet
listed below:

private DataTable dt=null;
private void Form1_Load(object sender, System.EventArgs e)
{
dt=new DataTable();
dt.Columns.Add(new DataColumn("column1", typeof(int)));
dt.Columns.Add(new DataColumn("column2", typeof(string)));

for(int i=0;i<6;i++)
{
DataRow dr=dt.NewRow();
dr["column1"]=i;
dr["column2"]="item"+i.ToString();
dt.Rows.Add(dr);
}
this.listBox1.DataSource=dt;
this.listBox1.DisplayMember="column2";
this.listBox1.ValueMember="column1";
}

private void button1_Click(object sender, System.EventArgs e)
{
this.dt.Rows[3]["column1"]="7";
this.dt.Rows[3]["column2"]="item7";
this.dt.DefaultView.Sort="column1 DESC";
}
===========================================================
Thank you for your patience and cooperation. If you have any questions or
concerns, please feel free to post it in the group. I am standing by to be
of assistance.

Best regards,
Jeffrey Tan
Microsoft Online Partner Support
Get Secure! - www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights.

Hi eXtreme,

Does my reply make sense to you? If you still have anything unclear, please
feel free to tell me, thanks

Best regards,
Jeffrey Tan
Microsoft Online Partner Support
Get Secure! - www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights.