Strange problem

[huzz]

I have a class method which takes integer as parameter...whe n i call the
method as shown below i get this error message: Specified cast is not valid

<td><%# bs.getPriority( (int)DataBinder .Eval(Container .DataItem,
"Priority") )%></td>

When i print the DataItem "Priority" it shows an integer value, but for some
reason the method does not like value.. if i call this method like ->
bs.getPriortiy( 3); it works fine.

In the database i have a field called "Priority" int type...

The method works fine when i call it in DataItemBound method..

any idea?

[Tod Birdsall]

Hi,

Try using

int.Parse(DataB inder.Eval(Cont ainer.DataItem, "Priority") )

DataBinder.Eval returns a string value type. (int) is used to
implicitly cast values to integers. Strings must be explicitly cast
using the Parse method.
Hope this helps.

Tod Birdsall, MCP
http://tod1d.blogspot.com

[huzz]

Tod thank you so much :) it worked..

still confused why one of them works not the other as shown below:
<TD><%# bs.getCampusNam e((int)DataBind er.Eval(Contain er.DataItem,
"CampusID") )%></TD>

<td><%# bs.getCampusNam e((int.Parse(Da taBinder.Eval(C ontainer.DataIt em,
"Priority")))%> </td>

both CampusID and Priority is same type of value..

Many Thanks again.
"Tod Birdsall" wrote:

Hi,

Try using

int.Parse(DataB inder.Eval(Cont ainer.DataItem, "Priority") )

DataBinder.Eval returns a string value type. (int) is used to
implicitly cast values to integers. Strings must be explicitly cast
using the Parse method.
Hope this helps.

Tod Birdsall, MCP
http://tod1d.blogspot.com

[huzz]

Sorry that did not solve the problem... :( i am getting this error message
now:

The best overloaded method match for 'int.Parse(stri ng)' has some invalid
arguments

"Tod Birdsall" wrote:

Hi,

Try using

int.Parse(DataB inder.Eval(Cont ainer.DataItem, "Priority") )

DataBinder.Eval returns a string value type. (int) is used to
implicitly cast values to integers. Strings must be explicitly cast
using the Parse method.
Hope this helps.

Tod Birdsall, MCP
http://tod1d.blogspot.com

[Scott Allen]

Acutally, DataBinder.Eval returns an object unless you pass a third
parameter, a format specifier, i.e.

DataBinder.Eval (Container.Data Item, "Priority", "{0:d}")

Otherwise you get an object reference back, in which case you could
use Convert.ToInt32

--
Scott
http://www.OdeToCode.com/blogs/scott/

On Tue, 9 Nov 2004 07:38:03 -0800, "huzz"
<hu**@discussio ns.microsoft.co m> wrote:

Sorry that did not solve the problem... :( i am getting this error message
now:

The best overloaded method match for 'int.Parse(stri ng)' has some invalid
arguments

"Tod Birdsall" wrote:

Hi,

Try using

int.Parse(DataB inder.Eval(Cont ainer.DataItem, "Priority") )

DataBinder.Eval returns a string value type. (int) is used to
implicitly cast values to integers. Strings must be explicitly cast
using the Parse method.
Hope this helps.

Tod Birdsall, MCP
http://tod1d.blogspot.com

[Tod Birdsall]

Hi,

Scott is correct. Sorry for the mis-information.

I tried to reproduce your error message. I created a function in the
code behind like so:

protected string GetRemainderInE scrow(decimal approvedAmount, object
paidAmount)

I then called the method from the aspx page using the following code :

<%# GetRemainderInE scrow( (decimal)DataBi nder.Eval(Conta iner,
"DataItem.Appro vedAmount"), DataBinder.Eval (Container, "DataItem.Paid" )
) %>

The code worked as it should. If you have control over the
'bs.getPriority ' method, try allowing an object to be passed instead of
an integer value type. If that doesn't work. If that still does not
work, copy and paste the exact error message and Stack Trace.
Tod Birdsall, MCP
http://tod1d.blogspot.com