How to pass SqlDbType.Varbinary field (using Eval) to C# method in .NET? -



How to pass SqlDbType.Varbinary field (using Eval) to C# method in .NET? -

in aspx code have (devexpress image control):

<dx:aspxbinaryimage value='<%# getphoto(eval("photo")) %>' id="binaryimagepreview" runat="server" clientidmode="autoid" width="100px" />

then in code behind have this:

protected static byte[] getphoto(byte[] photo) { homecoming photo; }

my table column photo of type varbinary(max) reading sqldbtype.varbinary mapped byte[] there shouldn't problems here, compiler throws error:

the best overloaded method match 'storeprofile.admin.getphoto(byte[])' has invalid arguments

why?

the reason want is check if photo exists (is null), show default photo disk, no_photo.jpg.

uh, ok. missing casting. calling method way solved problem:

getphoto((byte[])eval("photo"))

c# .net eval photo varbinary

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