Operand type clash: nvarchar is incompatible with image.how to solve?

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hi,

Anyone know how to aolve this error....

Operand type clash: nvarchar is incompatible with image......

des:

i have an column pro_image which datatype is image....but while run it shows like this........

Posted 9-Feb-12 0:46am

sathiyak

Updated 17-Jun-18 2:01am

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Christian Graus · Answer 1 · 2012-02-09T02:10:00

Solution 1

The error means what it says. An image is a stream of bytes. nvarchar is a text string. So, you are trying to set an image to be an nvarchar, in SQL you did not post, so we can't tell you the exact error.

Posted 9-Feb-12 2:10am

Christian Graus

Comments

Member 10031043 5-Jul-13 7:30am

Hi,

Could you help me how I can specify the datatype of the parameters
explicitly?

I have a column named "Picture" and as Column Type "Image", but when I would
like to update or insert an image into my DB I receive the same error as
Error was

"Operand type clash: nvarchar is incompatible with image "

I'm using ASP.NET2.0 and using GridView with an EditTemplate.

Can you help me with this ?

Christian Graus 5-Jul-13 16:58pm

You have not posted any code, but you can create the parameter first ( specifying the type in the constructor ), then add the data to it's value.

Taimoor Adil Badshah · Answer 2 · 2018-06-17T02:02:00

Solution 2

Usually we get this error while passing DBNull.Value as the value. Can you try the following.

instead of

cmd.Parameters.AddWithValue("@imgdata", SqlDbType.Image).Value = DBNull.Value;

use the following.

SqlParameter imageParameter = new SqlParameter("@imgdata", SqlDbType.Image);
imageParameter .Value = DBNull.Value;
cmd.Parameters.Add(imageParameter );

Posted 17-Jun-18 2:02am

Taimoor Adil Badshah

Comments

CHill60 18-Jun-18 3:56am

The question was asked and answered 5 years ago. I suggest you also test your solutions before posting ... SqlParameterCollection.AddWithValue Method (String, Object) (System.Data.SqlClient)[^]