SqlDataReader.GetFloat - C# / C Sharp

John Straumann

Hi all:

I have a SQL Data Table with some values of type "float" (set in SQL table
design). I am trying to read the values via a SqlDataReader (this app does
not use DataGrids) and for some reason I am getting a
"Specified cast is not valid" message.

Anyone out there know wassup with that?

Thanks.

John.

Nov 15 '05 #1

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10062

Nicholas Paldino [.NET/C# MVP]

John,

What are you trying to cast to? Are you trying to cast to double, or to
decimal? The type that is returned should be SqlFloat. If you use the
debugger, you can assign the value to an object variable, and see the type
of the object returned in the debugger.

Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"John Straumann" <js********@cogeco.ca> wrote in message
news:ul**************@TK2MSFTNGP09.phx.gbl...

Hi all:

I have a SQL Data Table with some values of type "float" (set in SQL table
design). I am trying to read the values via a SqlDataReader (this app does
not use DataGrids) and for some reason I am getting a
"Specified cast is not valid" message.

Anyone out there know wassup with that?

Thanks.

John.

Nov 15 '05 #2

Jon Skeet [C# MVP]

John Straumann <js********@cogeco.ca> wrote:

I have a SQL Data Table with some values of type "float" (set in SQL table
design). I am trying to read the values via a SqlDataReader (this app does
not use DataGrids) and for some reason I am getting a
"Specified cast is not valid" message.

Anyone out there know wassup with that?

Are you trying to cast it to a float? If so, that's probably what's
wrong. Somewhat confusingly, a SQL Float corresponds to a C# double.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

Nov 15 '05 #3

John Straumann

For SOME strange reason, GetSqlDouble worked...

John.

"Jon Skeet [C# MVP]" <sk***@pobox.com> wrote in message
news:MP************************@msnews.microsoft.c om...

John Straumann <js********@cogeco.ca> wrote:
I have a SQL Data Table with some values of type "float" (set in SQL table design). I am trying to read the values via a SqlDataReader (this app does not use DataGrids) and for some reason I am getting a
"Specified cast is not valid" message.

Anyone out there know wassup with that?

Are you trying to cast it to a float? If so, that's probably what's
wrong. Somewhat confusingly, a SQL Float corresponds to a C# double.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

Nov 15 '05 #4

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