public static DataProvider Instance()
{
if (provider == null)
{
const string assembly = "Aspose.DotNetNuke.Modules.AsposeDynamicFormGeneratorExcel.Data.SqlDataprovider,AsposeDNNDynamicFormGenerator";
Type objectType = Type.GetType(assembly, true, true);
provider = (DataProvider)Activator.CreateInstance(objectType);
DataCache.SetCache(objectType.FullName, provider);
}
return provider;
}