Add Rows to gridview with new content

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Hello,

I have a drop-down list and a text box with a button named add.

The functionality should be something like this:

After selecting a certain value from the drop-down, writing something in the text box when the Add button is pressed it will populate the values from the fields in a grid view below.

When a second value is selected from the drop-down with some text from the text box, the button add should append a new row in the grid with the previous one.

And new rows will keep on adding on button press.
Please help.

Posted 4-Oct-13 0:31am

Abhijit Singha Roy

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 4-Oct-13 6:49am

You forgot to mention your progress and issue.

2 solutions

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Diana Tsax · Answer 1 · 2013-10-04T00:59:00

Button add code :

protected void btnAdd_Click(object sender, ImageClickEventArgs e)
       {
           try
           {
               AddToOrder();
           }
           catch
           {
               string Msg = "<script>alert('Error occurred during adding the product..!');</script>";
               ScriptManager.RegisterClientScriptBlock(this, typeof(Page), "alert", Msg, false);
           }
       }

public void AddToOrder()
       {
           OrdersDataContext context = DataContextSingleton.Instance;

               _order = new Order();
               _order.quantity= Convert.ToInt32(dropdownlist.SelectedItem.Value);
               _order.price = Convert.ToInt32(dropdownlist2.SelectedItem.Value);
               _order.note = TextBox4.Text;
               context.Orders.InsertOnSubmit(order);
               context.SubmitChanges();
           this.RefreshGrid();
       }

public void RefreshGrid()
       {
           OrdersDataContext contex = DataContextSingleton.Instance;

           var query = (from o in _context.Orders
                        select new
                        {
                            Quantity = o.quant,
                            Price = o.price,
                            notes= o.note
                        });

           OrderGridView.DataSource = query.ToList();
           OrderGridView.DataBind();

       }

I hope this could help you!

Mahesh Bailwal · Answer 2 · 2013-10-04T00:59:00

You can use DataTable along with Session to achieve this. Below is code snippet for reference

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
        <asp:dropdownlist id="DropDownList1" runat="server" xmlns:asp="#unknown">
            <asp:listitem>Item1</asp:listitem>
            <asp:listitem>Item2</asp:listitem>
            <asp:listitem>Item3</asp:listitem>
        </asp:dropdownlist>
        <asp:button id="Button1" runat="server" onclick="Button1_Click" text="Button" xmlns:asp="#unknown" />
    
    </div>
    <asp:gridview id="GridView1" runat="server" xmlns:asp="#unknown">
    </asp:gridview>
    </form>
</body>
</html>

protected void Button1_Click(object sender, EventArgs e)
{
    DataTable dt = null;
    if (Session["datatable"] != null)
    {
        dt = (DataTable)Session["datatable"];
    }
    else
    {
        dt = GetDataTable();
    }
   DataRow dr = dt.NewRow();
   dr["Items"] = DropDownList1.SelectedValue;
   dt.Rows.Add(dr);

   GridView1.DataSource = dt;
   GridView1.DataBind();
   Session["datatable"] = dt;
}
private DataTable GetDataTable()
{
    DataTable dt = new DataTable();
    dt.Columns.Add(new DataColumn("Items"));
    return dt;
}

Add Rows to gridview with new content

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