Object reference not set to an instance of an object......How to solve this error

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Im getting the Error on Binding location in DropDownList from Database on this line( 2nd line in below method that is Error line)

C#

void fun()
{
ddlcompanyname.SelectedItem.Text = Dt.Rows[0]["Company_name"].ToString();---->No Error
ddllocation.SelectedItem.Text = Dt.Rows[0]["Location"].ToString();----->Error
}

""""Object reference not set to an instance of an object.""""""

Posted 7-May-14 21:30pm

phmani469

Updated 7-May-14 21:52pm

CHill60

v2

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Nitij 8-May-14 5:05am

Debug the code and either hover mouse over objects to see if any of them is null or use Quick Watch to find that out.

4 solutions

Solution 4

Finally I did it.....While Loading the Dropdown Location from Database...I getting Error ...Finally I encounter the Error......Thank u to all Supported me

Posted 8-May-14 22:18pm

phmani469

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Manas Bhardwaj · Accepted Answer · 2014-05-07T21:54:00

Solution 1

I am glad that you mentioned the two scenarios with and without error.

In the case where you get an error, the most probable situation would be that Dt.Rows[0]["Location"]. is returned as NULL.

And on a NULL object when you try to access a method or property, you get this error.

Hope this helps!

Posted 7-May-14 21:54pm

Manas Bhardwaj

Comments

phmani469 9-May-14 1:10am

Thanks 4 ur response.....Still problem is there, location value returning from DB ....Any other suggestions

CHill60 · Accepted Answer · 2014-05-07T21:55:00

Solution 2

Either,

Your datatable Dt does not have a field/column called "Location" (check spelling and case)

or,

ddllocation does not have a selected item

Debug to determine which of the two possible problems is the case.

If it is the latter of the two then you can always programmatically select an item

Posted 7-May-14 21:55pm

CHill60

Comments

phmani469 9-May-14 1:12am

1st of all thanks for ur response....Im check those spelling all r corect...Any other suggestions

CHill60 9-May-14 3:07am

What is the value of ddllocation.SelectedItem ... is it null?

phmani469 9-May-14 4:16am

Finally i Did it....While loading the dropdowns Im getting the Error .....Thank u so mush to spend ur valuable time to answer my questions

CHill60 9-May-14 4:24am

I'm glad it's working now

lukeer · Accepted Answer · 2014-05-07T21:56:00

Solution 3

Also have a look at solution #2 to this question[^] posted just minutes before your own.

Posted 7-May-14 21:56pm

lukeer