Problem to refresh the page everytime to show the label and to make buttons invisble

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i have a shpping cart showin in gridview.. where i have shown product name , quantity , price etc.. quantitiy can b updateable..

i have also give delete fuctionality so we can delete product from shopping cart..

when the cart become empty i want to hide gridview. i also want to hide button.. and show the lable... " your have not items in your shopping cart.." my page is in ajax update panel.. all the thing are working fine.. but if i delete the product from shopping cart shown in gridview.. the product get deleted.. but i have to refreash the page to show the label having value " you have no items in your cart" and to invisible the update and the place order button..

here is the code i implemented..

C#

if (ShoppingCart.GetItems(User.Identity.Name).Count > 0)
       {
           btnupdatecart.Visible = true;
           btnplaceorder.Visible = true;
       }
             //ObjectDataSource1.DataBind();
       if (GridView1.Rows.Count == 0)
       {
           Labelinfo.Visible = true; // containing value your cart doesn't contain any item
           btnupdatecart.Visible = false;
           btnplaceorder.Visible = false;

       }
       else
       {
           Labelinfo.Visible = false;
       }

what i have to do.. that i delte th product from cart as it becomes empty. then i have no need to refresh the page. the page automatically shows the " you have no itmes in your cart"

Posted 2-Nov-11 10:33am

codegeekalpha

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Comments

_Tushar Patil 3-Nov-11 1:14am

what data-source you are giving to grid-view for binding data..?

codegeekalpha 3-Nov-11 6:29am

i am coidng manually..

5 solutions

Solution 2

Hi,
If ur using Updatepanel in the page when grid view row command event fire the page is mot fully rendered .

So add this code in ur Page after

<triggers>
<asp:postbacktrigger controlid="GridView1" xmlns:asp="#unknown" />  
</triggers>

and when Grid doesn't have any data Use GridView1.DataSource = String.Empty;
For Lable Control write Code Like

if(GridView1.DataSource == String.Empty || GridView1.DataSource == null)
{
   label1.Text = "Your Message";
}

If Still u have problem Place the grid and buttons in a panel and Hide the Panel when needed.

Posted 2-Nov-11 21:10pm

sabbi26

Updated 2-Nov-11 21:11pm

v2

Comments

codegeekalpha 3-Nov-11 6:28am

still having a same problem

Solution 3

Hi Just rebind your grid and after that update the update panel.

C#

this.UPDATEPANEL_ID.update();

UPDATEPANEL_ID is the id of your update panel.

Hope it works.
Thanks
Faisal

Posted 3-Nov-11 1:19am

Faisal(mfrony)

Updated 3-Nov-11 21:23pm

v2

Solution 4

if there are no items in your table..
to display any message

<gridview showemptyheader="true" />

make empty header to true

and then in template header field give the table column names and

in middle section display ur message

Posted 3-Nov-11 20:04pm

Rakesh Aytha

Updated 3-Nov-11 21:23pm

v2

Solution 5

in pageload set the visibility property for label and button as true or false as ur requirment....

Posted 4-Nov-11 0:32am

vinoth kumar rajendran

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sriman.ch · Accepted Answer · 2011-11-02T19:55:00

Solution 1

Hi farooq,

I f you are using a gridview then set its empty data string so it will display the lable whenver there is no data in gridview.

I hope this helps

Thanks & regards
Sriman

Posted 2-Nov-11 19:55pm

sriman.ch