'System.Data.SqlClient.SqlConnection' in Assembly is not marked as serializable?

Question

This error occurred in asp.net & C# program:

System.Data.SqlClient.SqlConnection' in Assembly 'System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' is not marked as serializable

what is the reason for this type of error occurred?

Edit your question and include the relevant code where you use that connection. — Tim Schmelter
– Tim Schmelter, Commented Aug 29, 2014 at 7:26

Arion · Accepted Answer · 2014-08-29 07:15:37Z

3

Because you are trying to put SqlConnection in either a viewstate variable or you are trying to serialize the SqlConnection. The SqlConnection is not serializable that is why the error accrue. If it would be a class that you define yourself. Then you can mark it as serializable and then the error will not accoure. Like this:

[Serializable()]
public class YourClass
{
}

Reference:

SerializableAttribute Class

answered Aug 29, 2014 at 7:15

Arion

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