Part 1: Develop on sanbox solution and resolve error

Step 1: Open Visual Studio 2010 | Add New Project | Sharepoint | Empty Sharepoint Project and named is DevSanbox Step 2: Choose your Web App and choose deploy sanbox Step 3: Add new item | Web Part and named is DevSanbox Step 4: code in event  CreateChildControls as Code here protected override void CreateChildControls()         {             Literal literalResult...

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Part 1: Attach file to Web Part using module feature

Step 1: Open visual studio 2010 | New | Project | Empty Sharepoint Project , project name is: ApplyCssUseModuleFeartureSanbox Step 2: Choose deploy sanbox solution Step 3: Add new Item Step 4: Choose Module, name is CallFileCssOrScript Step 5: View UI below Step 6: Rename Sample.txt file to Sample.css Step 7: Copy  code  Url="_catalogs/masterpage" RootWebOnly="TRUE" List="116" and paste to here Step...

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