Getting Custom Web Part Property Value Using C#

Question

I am creating a method that will iterate through all of the web parts on a page in my SharePoint site. What I need to do is update a custom web part's, created by another company, property. I have gone through all of the properties for the web part using C# and none of the values returned are what i am looking for.

Here is my C# code,

private void GetWebParts()
    {   
        // What site you are using.
        using (SPSite site = new SPSite("http://site..com/sites/dept/"))
        {
            // Returns the Web site that is located at the specified server-relative or site-relative URL.
            using (SPWeb web = site.OpenWeb())
            {
                // Give the file name you are looking for.
                SPFile file = web.GetFile("SitePages/FNDisposalRequestICV.aspx");
                using (SPLimitedWebPartManager wpm = file.GetLimitedWebPartManager(System.Web.UI.WebControls.WebParts.PersonalizationScope.Shared))
                {   
                    // Loop through all of the web parts on the page.
                    foreach (SysUI.WebPart wp in wpm.WebParts)
                    {
                        // Here is where I should be able to get and update all of the 
                        // web part properties. For some reason I am unable to get all 
                        // of the custom web part properties but am able to get the 
                        // "standard" ones i.e. Title, TitleUrl...
                        wp.Title;

                        // Saves the changes of any updates you made to the web part.
                        //wpm.SaveChanges(wp);
                    }
                }
            }
        }
    }

Is there a certain class to use that is used for custom web parts? Or am i missing a step somewhere in my code?

EDIT

I have exported the custom web part where i need to get the data. The Property does exist and has a value. When I go to my C# code and try to access this property, I get an error saying it doesn't exist.

Answer 1

You should convert the webpart object to the custom object. First include the dll's which has the custom webpart. Then do as below

CustomWebPart cw = wpm.WebParts[0] as CustomWebPart;

Now you can access the custom properties of that webpart.