Solved: Invalid data has been used to update the list item. The field you are trying to update may be read only.

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mshaji🇮🇳

Invalid data has been used to update the list item. The field you are trying to update may be read only.

I have SharePoint blog and I created a custom web part to add the comments for a new post. But when i add comment item by using this web part then its giving an error "Invalid data has been used to update the list item. The field you are trying to update may be read only."

Please see the attached code here

Does any one have an Idea!

regards

string DURL = "http://myURL/";
                        using (SPSite site = new SPSite(DURL))
                        {
                            using (SPWeb web = site.OpenWeb())
                            {
                                web.AllowUnsafeUpdates = true;
                                SPList listLook = web .Lists ["Posts"];
                                SPList list = web.Lists["Comments"];
                                SPListItem Item1 = list.Items.Add();
                                Item1["Title"] = "My testing title";
                               
                                Item1.Fields["Post Id"].ReadOnlyField = false;
                                Item1["Post Id"] = 1;
                                Item1.Update();
                                Item1.Fields["Post Title"].ReadOnlyField = true;
                                Item1.Fields["Post Id"].ReadOnlyField = true; 
                            }
                        }

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GeorgeGergues

I think you are misusing the list update and item update

check the changes

  string DURL = "http://myURL/";
                        using (SPSite site = new SPSite(DURL))
                        {
                            using (SPWeb web = site.OpenWeb())
                            {
                                web.AllowUnsafeUpdates = true;
                                SPList listLook = web .Lists ["Posts"];

                                SPList list = web.Lists["Comments"];
                                SPListItem Item1 = list.Items.Add();
                                Item1["Title"] = "My testing title";
                               
                                list.Fields["Post Id"].ReadOnlyField = false;
                                list.Update();
                                Item1["Post Id"] = 1;
                                Item1.Update();
                                
                                list.Fields["Post Title"].ReadOnlyField = true;
                                list.Fields["Post Id"].ReadOnlyField = true; 
                                list.Update();

                            }
                        }

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but I think you are going at this the wrong way..

in any case ,let me know if that worked.

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Microsoft SharePoint

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Microsoft Sharepoint is a software platform and family of software products used for collaboration and web publishing combined. These capabilities include developing web sites, portals, intranets, content management systems, search engines, wikis, blogs, and other tools for business intelligence and collaboration. SharePoint has a Microsoft Office-like interface, and it is closely integrated with the Office suite.