995186-Resolve the ReadMe file length issue in this sample repository

Author: Raghav-Sudhakar

README.md

@@ -1,2 +1,27 @@
 # How-to-bind-winforms-checkboxadv-to-sql-database
-This session explains how to bind winforms checkboxadv to sql database
+
+A concise walkthrough to bind the Syncfusion WinForms CheckBoxAdv control to a SQL Server database, including reading and updating a bit/bool field.
+
+## Overview
+This sample explains how to:
+- Load a boolean/bit value from SQL Server and bind it to CheckBoxAdv
+- Support two-state or three-state (Indeterminate) values
+- Push user changes back to the database
+- Handle DBNull and value mapping scenarios
+
+## Notes on Binding Modes
+- Two-state only (true/false):
+  - Set ThreeState = false
+  - Bind the "Checked" property: `checkBoxAdv.DataBindings.Add("Checked", current, "IsActive", true, DataSourceUpdateMode.OnPropertyChanged);`
+- Three-state (true/false/null):
+  - Set ThreeState = true
+  - Bind the "CheckState" property with a null (DBNull) mapping as shown above
+
+## Troubleshooting
+- DBNull issues: Use ThreeState and bind to CheckState with a null mapping.
+- Update not saving: Ensure your table has a primary key and that SqlCommandBuilder can generate commands.
+- Designer toolbox: Install Syncfusion packages and rebuild the project if controls do not appear.
+- Connection failures: Validate the connection string and server accessibility.
+
+## About the sample
+This sample describes how to bind Syncfusion WinForms CheckBoxAdv to a SQL database within this sample. Adjust namespaces, package versions, and connection strings based on your environment.