Read VARBINARY(MAX) from SQL Server to C# -

i need read data row sql server 2008. type of 1 of columns varbinary(max). in c# want use out parameter read (and given scenario satisfies needs mostly).

but need specify parameter variable size fill c# variable. here assume 8000 enough... knows:

database.addoutparameter(command, "vbcertificate", dbtype.binary, 8000); 

so questions are:

1. what size of max in number sql server 2008?
2. is ok use out parameter scenario?

as @marc_s said, want add something.

there 2 data types

binary [ ( n ) ]

fixed-length binary data length of n bytes, n value 1 through 8,000. storage size n bytes.

varbinary [ ( n | max) ]

variable-length binary data. n can value 1 through 8,000. max indicates maximum storage size 2^31-1 (equals int.maxvalue i.e. 2,147,483,647) bytes. storage size actual length of data entered + 2 bytes. data entered can 0 bytes in length.

if specifying max concern should varbinary instead of binary

database.addoutparameter(command, "vbcertificate", dbtype.binary, 8000);

database.addoutparameter(command, "vbcertificate", sqldbtype.varbinary, int.maxvalue);