have to delete current row and add dynamically created table

Question

I have created one table with multiple controls and can generate rows with controls on add button click so, now how to 1).add update panel and 2).fire button click event which is creating in rows and in that have to 3).delete current row,and how to 4).add 'submit' button in footer. following is my code.

 

/Generating table with controls/

 

protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
GenerateTable(numOfRows);
}
}
protected void Button1_Click(object sender, EventArgs e)
{
if (ViewState["RowsCount"] != null)
{
numOfRows = Convert.ToInt32(ViewState["RowsCount"].ToString());
GenerateTable(numOfRows);
}
}
private void GenerateTable(int rowsCount)
{
Table table = new Table();
table.ID = "Table1";
Page.Form.Controls.Add(table);
const int colsCount = 4;
//TableFooterRow footer = new TableFooterRow();
//Button btn = new Button();
//btn.Width = 120;
//btn.Text = "Submit Records";
//btn.Click += new EventHandler(this.OnTestButtonClick);
//cell.Controls.Add(btn);
TableHeaderRow header = new TableHeaderRow();
TableHeaderCell headerTableCell1 = new TableHeaderCell();
headerTableCell1.Text = "Item Name";
header.Cells.Add(headerTableCell1);
TableHeaderCell headerTableCell2 = new TableHeaderCell();
headerTableCell2.Text = "Unit";
header.Cells.Add(headerTableCell2);
TableHeaderCell headerTableCell3 = new TableHeaderCell();
headerTableCell3.Text = "Quantity";
header.Cells.Add(headerTableCell3);
TableHeaderCell headerTableCell4 = new TableHeaderCell();
headerTableCell4.Text = "Rate";
header.Cells.Add(headerTableCell4);
TableHeaderCell headerTableCell5 = new TableHeaderCell();
headerTableCell5.Text = "Total";
header.Cells.Add(headerTableCell5);
table.Rows.Add(header);
connection.Open();
command = new SqlCommand();
command.CommandText = "dbo.sp_Get_Emp";
command.CommandType = CommandType.StoredProcedure;
command.Connection = connection;
command.Parameters.AddWithValue("@registrationId","1014");
da = new SqlDataAdapter(command);
ds = new DataSet();
DataSet dsSecond = new DataSet();
da.Fill(ds, "FirstTab");
da.Fill(ds, "SecondTab");
for (int i = 0; i < rowsCount; i++)
{
TableRow row = new TableRow();
for (int k = colsCount-1;k < colsCount; k++)
{
TableCell cell = new TableCell();                  
DropDownList dr = new DropDownList();
dr.ID = "DropDownList_" + i + "Col_" +k;
dr.DataSource = ds.Tables[0];
dr.DataTextField = "EmpName";
dr.DataValueField = "EmpId";
dr.DataBind();
cell.Controls.Add(dr);
row.Cells.Add(cell);
}
for (int j = 0; j <= colsCount-1; j++)
{
TableCell cell = new TableCell();
TextBox tb = new TextBox();
tb.ID = "TextBoxRow_" + i + "Col_" + j;
cell.Controls.Add(tb);                                      
row.Cells.Add(cell);
}
for (int l = colsCount+1; l < colsCount+2; l++)
{
UpdatePanel uptab = new UpdatePanel();
TableCell cell = new TableCell();
//cell.Controls.Add(this.BuildTestButton()); 
Button button = new Button();
button.Width = 120;
button.Text = "Delete Row";
button.ID = "button" + i+"col"+l;
button.Click += new EventHandler(this.OnTestButtonClick);
uptab.ContentTemplateContainer.Controls.Add(button);
cell.Controls.Add(button);
row.Cells.Add(cell);
}
table.Rows.Add(row);
//footer.Cells.Add(cell);
}
SetPreviousData(rowsCount, colsCount);
rowsCount++;
ViewState["RowsCount"] = rowsCount;
}