'Image' is an ambiguous reference between 'System.Web.UI.WebControls.Image' and 'System.Drawing.Image

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Hi,

I am using image and also color i my application.
and i am using namespace as bellow:

C#

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Xml.Linq;
using System.IO;
using System.Data.SqlClient;
using System.Net.Mail;
using System.Drawing.Imaging;
using System.Drawing;

Now it shows error. if i remove

C#

using System.Drawing;

then error shows in color block and if i remove

using System.Drawing.Imaging;

this namespace then error shows in image block.
So which namespace is actual reqired for both.

Posted 14-Jul-15 3:14am

Member 11221185

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2 solutions

Solution 1

Use the required namespace.
For e.g. if there is a class A that belongs to namespace N1 and N2 here is what you could do -

N1.A myObjectForN1 =  new N1.A();
N2.A myObjectForN2 =  new N2.A();

Posted 14-Jul-15 3:31am

Abhinav S

Updated 14-Jul-15 3:32am

v2

Comments

Sergey Alexandrovich Kryukov 14-Jul-15 11:15am

5ed, but there is a bit more about it.
Please see Solution 2. Your solution is credited.
—SA

Abhinav S 14-Jul-15 12:03pm

Thanks.

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Sergey Alexandrovich Kryukov · Accepted Answer · 2015-07-14T05:15:00

In addition to Solution 1:

First of all, make sure you really need both types in the same file. It may happen that one is just a remnant of old code. With Visual Studio, it's always useful to do this: show popup menu in the code editor and use "Organize Usings" => "Remove Unused Usings". Don't overuse "using". :-)

But it's possible that you really use both types in one code file. So, namespaces…

Now, understanding of namespaces is one of the basics things you need. You cannot do any programming without full understanding. The error message tells you clearly what's wrong. You just need to read on the topic: .

In addition to the technique showed in Solution 1, you can use alias using directive (not to be mixed up with using statement!): https://msdn.microsoft.com/en-us/library/sf0df423.aspx[^]:

C#

using WebImage = System.Web.UI.WebControls.Image;
using DrawingImage = System.Drawing.Image;

//...

WebImage image = //...

//...

DrawingImage image = //...

You can choose any of the ways, or combine them, depending on your sense of readability and personal taste.

—SA