Get web part assembly name and type name from SharePoint web part gallery

Today i was trying create to custom webpart preview page as test canvas for site admins. For this i wanted to add webpart on fly.  We need few properties like web part type name and web part assembly name for this.

string webPartTitle = " Content Editor Web Part";

string webPartTypeName = string.Empty;

string webPartAssemblyName = string.Empty;

SPList wpGallery = SPContext.Current.Site.GetCatalog(SPListTemplateType.WebPartCatalog);

SPQuery wpQuery = new SPQuery();

wpQuery.Query = @"<Where><Eq><FieldRef Name='Title' /><Value Type='Text'>" + webPartTitle + "</Value></Eq></Where>";

SPListItemCollection items = wpGallery.GetItems(wpQuery);

if (items != null && items.Count > 0)

{

       webPartTypeName = items[0]["WebPartTypeName"].ToString();

       webPartAssemblyName = items[0]["WebPartAssembly"].ToString();

}

Some other useful properties are below

- WebPartDescription
- WebPartPartImageLarge
- LinkWebPart
- WebPartIcon
- Group
- QuickAddGroups

Find all ContentByQueryWebParts from the page programatically

Microsoft.SharePoint.WebPartPages.SPLimitedWebPartManager manager = web.GetLimitedWebPartManager("Pages/default.aspx", PersonalizationScope.Shared);

foreach (Microsoft.SharePoint.WebPartPages.WebPart webPart in manager.WebParts)
{
 string type name="Microsoft.SharePoint.Publishing.WebControls.ContentByQueryWebPart, Microsoft.SharePoint.Publishing, Version=14.0.0.0,   Culture=neutral,    PublicKeyToken=71e9bce111e9429c";

 Type type = webPart.GetType();
 if (type.FullName.Contains("ContentByQueryWebPart")
 {
  //then it is ContentByQueryWebPart
 }
}