i am geeting error messgae like Trying to use an SPWeb object that has been closed or disposed and is no longer valid?

Question

 

below is the my code. code is working fine but i am getting below error message

Trying to use an SPWeb object that has been closed or disposed and is no longer valid.

please find the below code

 if (!IsPostBack)
            {
         
                SPWeb web = SPContext.Current.Web;
                foreach (SPList lst in web.Lists)
                {
                    if (lst.BaseTemplate == SPListTemplateType.WebPageLibrary)
                    {
                        ddlWikis.Items.Add(lst.Title);
                    }
                }
                web.Dispose();
            }

 

 protected void btnReplace_Click(object sender, EventArgs e)
        {
            using (SPWeb web = SPContext.Current.Web)
            {
                SPList list = web.Lists[ddlWikis.SelectedItem.ToString()];

                int articleCount = 0;
                int occurrenceCount = 0;
                string wikiText = "";

                foreach (SPListItem wikiItem in list.Items)
                {
                    wikiText = wikiItem["WikiField"].ToString();
                    if (wikiText.Contains(txtFind.Text))
                    {
                        articleCount++;

                        // a trick to get the word cound
                        int count = (wikiText.Length - wikiText.Replace(txtFind.Text, "").Length) / txtFind.Text.Length;
                        occurrenceCount += count;

                        wikiItem["WikiField"] = wikiText.Replace(txtFind.Text, txtReplace.Text);
                      
                        wikiItem.Update();
                      //  web.AllowUnsafeUpdates = false;

                    }
                }
                lblResults.Text = articleCount.ToString() + " articles updated, " + occurrenceCount.ToString() + " occurrences updated";
             
            }
        }

 

please let me know what is wrong in that code.

---

SWAPNA

Answer 1

It happens because you disposed SPWeb object in your code. If you do not create new SPWeb you do not need to dispose it.

---

Oleg

Answer 2

You dispose of the context web in the first block so it is no longer usable in the second block.

http://msdn.microsoft.com/en-us/library/aa973248(v=office.12).aspx

"SPContext objects are managed by the SharePoint framework and should not be explicitly disposed in your code. This is true also for the SPSite and SPWeb objects returned bySPContext.Site, SPContext.Current.Site, SPContext.Web, and SPContext.Current.Web."