remove other DataRows from your DataTable

[zhshqzyc]

remove other DataRows from your DataTable

Hi, I want to display the top three rows of the table.
So I just want to remove the other rows.
Suppose the datas are not from a database.
How to do it?

Thanks

[nateraaaa]

remove other DataRows from your DataTable

Hi, I want to display the top three rows of the table.
So I just want to remove the other rows.
Suppose the datas are not from a database.
How to do it?

Thanks

You could use a for loop and make the boundary 3 so that it will only loop through the 1st 3 rows of your DataTable and return the data for the 1st 3 rows.

Nathan

[zhshqzyc]

I need more details because I tried to deleted the extra lines but the deleted parts are still displayed. Why? Thanks for your help.

protected void Button1_Click(object sender, EventArgs e)
        {
            DataTable t1 = new DataTable();
            t1 = GetTable();
            for (int i = 3; i < t1.Rows.Count; i++)
                t1.Rows.RemoveAt(i);
            DataView dv = new DataView(t1);
            dv.Sort = "Temperature ASC";
            GridView1.DataSource = dv;
            GridView1.DataBind();
        }
 
        public DataTable GetTable()
        {
            DataSet newSet = new DataSet();
            DataTable Index = new DataTable("Index");
            GenerateDataSet(newSet,Index);
            return Index;
        }

.

[nateraaaa]

I need more details because I tried to deleted the extra lines but the deleted parts are still displayed. Why? Thanks for your help.

protected void Button1_Click(object sender, EventArgs e)
{
DataTable t1 = new DataTable();
t1 = GetTable();
for (int i = 3; i < t1.Rows.Count; i++)
t1.Rows.RemoveAt(i);
DataView dv = new DataView(t1);
dv.Sort = "Temperature ASC";
GridView1.DataSource = dv;
GridView1.DataBind();
}
 
public DataTable GetTable()
{
DataSet newSet = new DataSet();
DataTable Index = new DataTable("Index");
GenerateDataSet(newSet,Index);
return Index;
}

.

If you only want the 1st 3 records you need your for loop set up like this

 for(int i = 0; i < 3; i++) 
{
//add each row to your datatable or dataview here
}
 

Nathan