DataBinding problem

I have a DataList Control as follows

<asp:DataList ID="DataList1" runat="server" DataKeyField="FruitID"  RepeatColumns="2" Width="387px">
<ItemTemplate>
    <asp:Image ID="Image1" runat="server" Height="104px" ImageUrl='<%# Eval("ImageUrl") %>' Width="135px" />
    <br />
    Item ID:
    <asp:Label ID="lblItemID" runat="server" Text='<%# Eval("FruitID") %>' />
    <br />
    FruitName:
    <asp:Label ID="lblFruitNameLabel" runat="server" Text='<%# Eval("FruitName") %>' />
    <br />
    UnitPrice:
    <asp:Label ID="lblUnitPriceLabel" runat="server" Text='<%# Eval("UnitPrice") %>' />
    <br />
    Quantity:
    <asp:TextBox ID="txtQuantity" runat="server"></asp:TextBox>
    <br />
    &开发者_开发技巧lt;br />
</ItemTemplate>
</asp:DataList>
<asp:Button ID="btnAddtoCart" runat="server" onclick="Button1_Click"  Text="Add to Cart" />

and in the code behind im using the following code to get the values of the controls inside the DataList control

int id = int.Parse(((Label)DataList1.Controls[0].FindControl("lblItemID")).Text.ToString());
string Name = ((Label)DataList1.Controls[0].FindControl("lblFruitNameLabel")).Text;
double Price = double.Parse(((Label)DataList1.Controls[0].FindControl("lblUnitPriceLabel")).Text.ToString());
int Quantity = int.Parse(((TextBox)DataList1.Controls[0].FindControl("txtQuantity")).Text.ToString());
string Url = ((Image)DataList1.Controls[0].FindControl("Image1")).ImageUrl;

I'm getting the following exception

Input string was not in a correct format.

Exception occurs in the following line

int Quantity = int.Parse(((TextBox)DataList1.Controls[0].FindControl("txtQuantity")).Text.ToString());

I'm very much sure that i'm entering a Integer value to the textbox :)

am I missing something?

Maybe that would be great when you little bit rewrite your code to this

var myQuantity = ((TextBox)DataList1.Controls[0].FindControl("txtQuantity")).Text.ToString();
int Quantity = int.Parse(myQuantity);

and check with Debugger what type is myQuantity. This should help you to locate your issue.

It could be because of the type casting problem, from the number you entered, to integer. Try making it a long data type instead and also make sure that no characters exists in between the string you entered.

try this

int Quantity =Convert.ToInt32(((TextBox)DataList1.Controls[0].FindControl("txtQuantity")).Text.ToString());

<br />
Quantity :
<asp:TextBox ID="txtQuantity" runat="server"></asp:TextBox>
<br />

i saw that u have not make any bind to txtQuantity. And Convert.ToInt32 gives exception because it s null string. i think so