send data from list to sharepoint application page

Question

is there any way to connect a SharePoint application page to a list in the SharePoint to save data inside form (in application page) to the list in the SharePoint

i need to know it i can make connection code in the application page to connect to the list or if there is another way to do that

Answer 1

Yes, you definitely can do it.

There are even the special type of controls which could help you in this task: SharePoint Controls.

The idea is that you add some controls on you application page (using aspx file or code-behind), set several fields of these controls like FieldName, ListId, ItemId, ControlMode (New, Edit, Display) and after that this control is connected to the list that you connect it to. So,

• if you set ControlMode to Edit (or Display for readonly) when you open this application page, you will see value of necessary field this control is connected to (using ListId and ItemId);
• if ControlMode is New (that you need), then after submitting this page using <SharePoint:SaveButton runat="server" ControlMode="New"/> a new item will be added in the list controls connected to.

You can have something similar in you aspx file:

<asp:Content ID="Main" ContentPlaceHolderID="PlaceHolderMain" runat="server">
    <SharePoint:FormField id="NameField" runat="server" FieldName="Name" ControlMode="New"/>
    <SharePoint:FormField id="TitleField" runat="server" FieldName="Title" ControlMode="New"/>
    <SharePoint:SaveButton runat="server" ControlMode="New"/>
    <SharePoint:GoBackButton runat="server" ControlMode="New"/>
</asp:Content>

As your control should be connected to some list, you should change context of it. You can do it in your code-behind:

protected override void OnInit(EventArgs e)
    {
       using (SPSite site=SPContext.Current.Site){
          using (SPWeb web = _list.ParentWeb)
          {
               SPContext renderContext = SPContext.GetContext(this.Context, 0, _list.ID, web);
               NameField.RenderContext = renderContext;
               NameField.ItemContext = renderContext;
               TitleField.RenderContext = renderContext;
               TitleField.ItemContext = renderContext;
          }
      }
  }

Probably part of code shown above has some issues (I didn't test it), but I think you have to take a look at the way of SharePoint controls. If proposed solution doesn't work for you, don't hesitate to let us know and I will improve my answer.

Some links, which could be usefull:

• Generate SharePoint form to save items into SharePoint lists dynamically with SharePoint Web Controls
• Making Use of the SharePoint Field Type Editing Controls

Answer 2

The short answer to your question is yes.

Below is a snippet of one of my application pages, where we tease out the ListID and ItemID that were passed via the URL query string (more on that at Chak's Sharepoint Corner)

Note, in my example page below, I skipped using any ASPX web controls and just emit HTML directly to the response stream. You can altar to do whatever you want, of course. You'll want to implement post-backs and such so as to update a list item I assume.. my un-used 'LoadListVariables' function will at least show you how to get started.

Imports System
Imports Microsoft.SharePoint
Imports Microsoft.SharePoint.WebControls
Imports Microsoft.SharePoint.Administration

Namespace AjaxPagelets

    Partial Public Class CommentsFetcher
    Inherits LayoutsPageBase

    Private m_siteID As Guid
    Private m_webID As Guid
    Private m_currentListID As Guid

    Private idForList As String
    Private itemidFromQS As String

    Private specificListItemid As Integer
    Private currentLogList As SPList
    Private currentLogListItem As SPListItem

    Private Sub LoadCommonVariables()
        m_siteID = SPContext.Current.Site.ID
        m_webID = SPContext.Current.Web.ID

        idForList = Request.Params("ListID")
        itemidFromQS = Request.Params("ItemID")

        specificListItemid = 0
        m_currentListID = New Guid(idForList)
    End Sub

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
        LoadCommonVariables()


        Dim doThis As SPSecurity.CodeToRunElevated
        doThis = AddressOf LoadListVariables

        SPSecurity.RunWithElevatedPrivileges(doThis)

        Response.Clear()

        Response.Write("<html><head><title>" & CStr(currentLogListItem("Title")) & "</title>" & vbCrLf)
        Response.Write("<script type=""text/javascript"">function closeTheWindow(){window.frameElement.commonModalDialogClose(0, 0);}</script>")
        Response.Write("<style>body{font-family:Trebuchet MS;}</style></head><body>" & vbCrLf)
        Response.Write(currentLogListItem("Comments"))
        Response.Write("<br /><a href='javascript:closeTheWindow()'>Close</a>")
        Response.Write("</body></html>")

    End Sub

    Private Sub LoadListVariables()
        If Int32.TryParse(itemidFromQS, specificListItemid) Then
        Using site As New SPSite(m_siteID)
            Using wb As SPWeb = site.AllWebs(m_webID)
            Try
                currentLogList = wb.Lists(m_currentListID)

                currentLogListItem = currentLogList.GetItemById(specificListItemid)

            Catch ex As Exception
                SPDiagnosticsService.Local.WriteTrace(0, New SPDiagnosticsCategory("eSWRC Comments Fetch Failure", TraceSeverity.Unexpected, EventSeverity.Error), TraceSeverity.Unexpected, ex.Message, ex.StackTrace)
                EmitExceptionResponse(ex)
            End Try

            End Using
        End Using
        End If

    End Sub


    Private Sub EmitExceptionResponse(ByVal ex As Exception)
        Response.Write("<html><head><title>There was an error!</title>" & vbCrLf)
        Response.Write("<script type=""text/javascript"">function closeTheWindow(){window.frameElement.commonModalDialogClose(0, 0);}</script>")
        Response.Write("<style>body{font-family:Trebuchet MS;}</style>" & vbCrLf)
        Response.Write(String.Format("</head><body><h1>{0}</h1><h3>{1}</h3><a href='javascript:closeTheWindow()'>Close</a>", ex.Message, ex.StackTrace.Replace(vbCrLf, "<br />")))
        Response.Write(String.Format("<h4>ListID: {0}</h4>{2}<h4>ItemID: {1}</h4>{2} <p>SiteID:{3}</p>{2}<p>WebID: {4}</p>{2}<h2>SPCurrent.ListID: {5}</h2>{2}", idForList, itemidFromQS, vbCrLf, m_siteID, m_webID, m_currentListID))
        Response.Write("</body></html>")
    End Sub

    End Class

End Namespace

Because my application page is shown within a SharePoint modal dialog, I used a special piece of JavaScript that allows the user to close the dialog correctly, too.