Most likely your problem has something to do with the single quotes. The weblog editor changed all the quotes (double and single) into so called ’smart’ quotes. You probably already changed the double quotes into their regular version because they will result in errors when building the project. Please replace the ’smart’ single quotes also with their regular versions (throughout the whole solution). They do not cause an error directly, but they are used for the HTML attributes (onclick, the designer, etc.) and will result in problems later on. If you have replaced all quotes, the custom grid should work (it does on my pc).

The easiest way to incorporate the grid into your page is to create a Release version of the library (change configuration to ‘release’ in the Solution Property Pages). This way the grid will automatically be added to your toolbox. Now you can drag-and-drop the grid onto your web page in design view and you are sure that the DLL is copied and the right reference is set.

I hope you do not mind, but I have deleted the large comments with your code. I cannot replicate your error because I do not have your database. The source code is now included in the article (last page). I hope this will help you in finding the error.

Regards, Jan

My solution has web form. this web form uses the WITControlsLibrary.dll(inside bin folder) and i set the reference to this dll.

firstly, In the same solution, i have WITControlsLibrary Project. after building this project, i take the WITControlsLibrary.dll and put it in bin of the solution.

it is compiled with out any error. But during run time, it gives error.

i got the following exception. i have given both aspx and error message. what is the problem? any thing i missed?. if not possible to solve, can you give the code to test the control?

Exception
=========
System.FormatException: String was not recognized as a valid Boolean.

aspx code
=========

Untitled Page

sorry again,

thank you

regards,
s.suresh

Best Regards, Jan

i give you the code where i get the error and the error message.

i tried to solve the error. but i can’t. please help me to solve this.

WITGrid.cs
==========
Code
CheckBoxField cbf = (CheckBoxField)gf;
if (cbf.DataField == null) throw (new NullReferenceException(“The data field for ‘” + cbf.ID + “‘ is not defined.”));

Errors

1. Cannot convert type ‘WITControlsLibrary.GridField’ to ‘System.Web.UI.WebControls.CheckBoxField’ E:\sureshnotes\samplecustomcontrol\samplecuscontrol\WITConLib\WITControlsLibrary\WITGridDesigner.cs

2. System.Web.UI.WebControls.CheckBoxField’ does not contain a definition for ‘ID’ E:\sureshnotes\samplecustomcontrol\samplecuscontrol\WITConLib\WITControlsLibrary\WITGrid.cs

WITGridDesigner.cs
==================
Code
s += “[" + ((CheckBoxField)(gf)).DataField + "]“;

Errors
Cannot convert type ‘WITControlsLibrary.GridField’ to ‘System.Web.UI.WebControls.CheckBoxField’ E:\sureshnotes\samplecustomcontrol\samplecuscontrol\WITConLib\WITControlsLibrary\WITGridDesigner.cs

regards,
suresh

if you have, send to my email address