Prerequisites:
1. Visual Studio
2. SharePoint Site
3. Visual Studio 2010 Power Tools
4. Office 365 Site
Note: Please install Visual Studio 2010 Power Tools before starting
Please follow the below Procedure.
Step 1
Run Visual Studio as an Administrator
Step 2
Create a Project using “Empty SharePoint Project” Template
Step 3
Specify the local Share Point site Url(Not o365)
Step 4
Select “Deploy as Sandbox solution”option and click on Finish
Step 5
Now Add Visual Web part(Sandbox) Template
Step 6
Write your code as per the requirement
Step 7
Build the Solution and Test the functionality in Local Site.
Step 8
Package the solution by clicking on “Package” Option.
Right click on solution ->Package
Step 9
Now login into o365 Site as an Administrator
Step 10
click on the solution Gallery
Root site -> Site Actions -> Site Settings -> Galleries -> Solutions
Step 11
Click on Solutions
Step 12
Click on “Upload Solution” and browse the .wsp file that you have created in Visual Studio
take wsp from bin’s Debug/Release Folder of Solution.
Step 13
Click on “Activate” button
Step 14
Create Page and add the web part. Thats it.