i want to show image in pop up window after click large image button but error comes out plzz help me

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C#

{
            string keyword = Request.QueryString["Mailid"];
            DataSet oDS = new DataSet();
            oDS = SearchHelper.getResultByKeywords(keyword);
            string itempic = oDS.Tables[0].Rows[0]["SGL_IMG"].ToString();
            //string url = Convert.ToString(Session["url"]);
            string img = "http://content.oppictures.com/Master_Images/Master_Variants/Variant_400/" +  itempic;

        }

Posted 15-Aug-13 23:31pm

Member 10184990

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Member 10184990 16-Aug-13 5:32am

error comes in this line (there is no row at oDS.Tables[0].Rows[0]) string itempic = oDS.Tables[0].Rows[0]["SGL_IMG"].ToString();

CodeBlack 16-Aug-13 8:17am

as error says : "there is no row at oDS.Tables[0].Rows[0]"
SearchHelper.getResultByKeywords(keyword); doesnt return any value. and put if condition for the null check and check whether there is any data in the table or not.

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Member 8622273 · Answer 1 · 2013-08-16T01:59:00

Solution 1

the record with the keyword does not exists in database its returning null value. when you are trying to assign the value to a string its throwing exception. So before assigning the value check whether any table exists in the result.

Posted 16-Aug-13 1:59am

Member 8622273

Nick Fisher (Consultant) · Answer 2 · 2013-08-16T02:10:00

Solution 2

Make sure your query is returning a value, otherwise this code will throw an exception.

A simple test is:

C#

if (oDS.Tables.Count > 0 && oDS.Tables[0].Rows.Count > 0)
{
     // data returned, so go create the image URL
}
else
{
     // no data returned, so handle the error here   
}

Posted 16-Aug-13 2:10am

Nick Fisher (Consultant)