Sharepoint Client Object find if the folder exists in Sharepoint list or library

Below code finds if the Folder is present or not in a SharePoint List or library from client side

public void CheckFolderExists(string siteURL)

        {

            ClientContext clientContext = new ClientContext(siteURL);

            List oList = clientContext.Web.Lists.GetByTitle("ListA");

            CamlQuery camlQuery = new CamlQuery();

            camlQuery.ViewXml = "<View Scope='RecursiveAll'>"

                                                + "<Query>"

                                                         + "   <Where>"

 + "      <Eq><FieldRef Name='FSObjType' /><Value Type='Integer'>1</Value></Eq>"

                                                         + "   </Where>"

                                                + "</Query>"

                                + "</View>";

            ListItemCollection collListItem = oList.GetItems(camlQuery);

            clientContext.Load(collListItem);

            clientContext.ExecuteQuery();

            string a = "";

            foreach (ListItem oListItem in collListItem)

            {

               

               a = a + oListItem["Title"];

               

            }

            label1.Text = a;

        }

The code will give you all the folders in the list ,you can play with CAML query or object to get the folder which you need