sharepoint 2013 html branding master page add an app not working

Ran into an interesting little bug this past week with SharePoint 2013 Design Manager master pages. After having a friend recreate the issue on her VM, I contacted the Microsoft product team and confirmed this is an issue they hope to solve with a future update. Essentially, if you create a master page with the Design Manager, whether a minimal master or one that has been converted from HTML and CSS, the Site Contents > Add an app page will not allow you to add apps or lists to your site. This issue also impact the out of the box Oslo master page. Here is what you should see when you go to the Add an App page:

With this bug you end up never seeing the Apps you can add section. Sometimes you will see the “Working on it…” message and other times you will just see the Noteworthy apps.

The key to fixing this problem is to make sure your master page includes: DeltaPlaceHolderLeftNavBar, PlaceHolderLeftNavBar, DeltaPlaceHolderPageTitleInTitleArea, and PlaceHolderPageTitleInTitleArea and that each of them is not set to Visible=False. To do this in an HTML master page with Design Manager you would add the following snippets:

<!--SPM:<SharePoint:AjaxDelta id="DeltaPlaceHolderLeftNavBar" BlockElement="true" runat="server">-->
<!--SPM:<asp:ContentPlaceHolder id="PlaceHolderLeftNavBar" runat="server">-->
<!--SPM:</asp:ContentPlaceHolder>-->
<!--SPM:</SharePoint:AjaxDelta>-->
<!--SPM:<SharePoint:AjaxDelta id="DeltaPlaceHolderPageTitleInTitleArea" runat="server">-->
<!--SPM:<asp:ContentPlaceHolder id="PlaceHolderPageTitleInTitleArea" runat="server">-->
<!--SPM:</asp:ContentPlaceHolder>-->
<!--SPM:</SharePoint:AjaxDelta>-->

With these lines in place, the Apps you can add should show up again. Note, if you aren’t making a Design Manager HTML master page you will still want to ensure these controls (without the DM comments) are included somewhere in your master page and not marked as Visible=False.

SharePoint 2010 farm version power shell comment

Get-spfarm | select buildversion

Lower version no problem, but higher version could't backup

Change Date Formate in Grid view

<asp:TemplateField>

<HeaderTemplate>Join Date</HeaderTemplate><ItemTemplate><asp:Label ID="lblsolution" runat="server" Text='<%# Eval("JoinDate", "{0:MM/dd/yyyy}") %>'></asp:Label></ItemTemplate></asp:TemplateField>

Grid View Edit & Delete

<asp:TemplateField HeaderText="Edit">

<ItemTemplate><asp:HiddenField ID="hdnedit" runat="server" Value='<%# Bind("ID") %>' /><asp:ImageButton ID="imgbtnedit" runat="server" CommandName="Edit" ToolTip="Edit"ImageUrl="/_Layouts/edit.png" /></ItemTemplate><HeaderStyle HorizontalAlign="Center" /><ItemStyle HorizontalAlign="Center" /></asp:TemplateField><asp:TemplateField HeaderText="Delete"><ItemTemplate><asp:HiddenField ID="hdndelete" runat="server" Value='<%# Bind("ID") %>' /><asp:ImageButton ID="imgbtndelete" runat="server" CommandName="Delete" ToolTip="Delete"ImageUrl="/_Layouts/delete.png" OnClientClick="Javascript:return fnDelete(this);" /></ItemTemplate></asp:TemplateField>--------------------------------------
void gvform_RowEditing(object sender, GridViewEditEventArgs e){

GridViewRow gvedit = gvform.Rows[e.NewEditIndex];
Label lblidval = (Label)gvedit.FindControl("lblid");lblidvalue.Text = lblidval.Text;

try{
using (SPSite osite = new SPSite(SPContext.Current.Site.ID)){

using (SPWeb oweb = osite.OpenWeb()){

SPList olist = oweb.Lists.TryGetList("EmployeeList");
if (olist != null){

SPListItem splitem = olist.Items.GetItemById(Convert.ToInt32(lblidval.Text));txtFName.Text =
Convert.ToString(splitem["FName"]);txtLName.Text =
Convert.ToString(splitem["LName"]);txtEmpID.Text =
Convert.ToString(splitem["EmpID"]);txtEmail.Text =
Convert.ToString(splitem["MailID"]);ddjoindate.SelectedDate =
Convert.ToDateTime(splitem["JoinDate"]);dddob.SelectedDate =
Convert.ToDateTime(splitem["DOB"]);dddepartment.SelectedIndex =
Convert.ToInt32(splitem["Dept"]); // dropdown Bind_Data();
}
-----------------------
DELETING

(Get ID from gridview)

void gvform_RowDeleting(object sender, GridViewDeleteEventArgs e){

try{
GridViewRow gvrow = gvform.Rows[e.RowIndex];
Label lblid = (Label)gvrow.FindControl("lblid");
int deleteval = Convert.ToInt32(lblid.Text);Deleted_Action_Details(deleteval);
}

catch (Exception ex){

throw ex;}
}
---------
(Assign the ID)

void Deleted_Action_Details(int val){

try{
using (SPSite osite = new SPSite(SPContext.Current.Site.ID)){

using (SPWeb oweb = osite.OpenWeb()){

SPList olist = oweb.Lists.TryGetList("EmployeeList");
if (olist != null){

SPListItem splitem = olist.Items.GetItemById(val);oweb.AllowUnsafeUpdates =
true;splitem.Delete();
oweb.AllowUnsafeUpdates =
false;Bind_Data();
}
}
}
Bind_Data();
}

catch (Exception ex){

throw ex;}
}

Application Page JavaScript Validation For all Controls

<asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClientClick="return validationfrm();" />

-------------------------------------------
<script type="text/javascript">function validationfrm() {
var rval = true;
var objfoucs;
var varFName = document.getElementById('<%=txtFName.ClientID %>').value;
var varLName = document.getElementById('<%=txtLName.ClientID %>').value;
var varEmpID = document.getElementById('<%=txtEmpID.ClientID %>').value;
var varEmail = document.getElementById('<%=txtEmail.ClientID %>').value;
var varddjoindate = document.getElementById('<%=ddjoindate.Controls[0].ClientID %>').value;
var vardob = document.getElementById('<%=dddob.Controls[0].ClientID %>').value;
var varppmanager = document.getElementById('<%=ppmanager.ClientID %>').value;

if (varFName == null || varFName == "") {alert(
"First name must be filled out");
if (objfoucs == null)objfoucs = document.getElementById(
'<%=txtFName.ClientID %>');objfoucs.focus();
rval =
false;}

else if (varLName == null || varLName == "") {alert(
"Last name must be filled out");
if (objfoucs == null)objfoucs = document.getElementById(
'<%=txtLName.ClientID %>');objfoucs.focus();
rval =
false;}

else if (varEmpID == null || varEmpID == "") {alert(
"Employee ID must be filled out");
if (objfoucs == null)objfoucs = document.getElementById(
'<%=txtEmpID.ClientID %>');objfoucs.focus();
rval =
false;}

else if (varEmail == null || varEmail == "") {alert(
"Email must be filled out");
if (objfoucs == null)objfoucs = document.getElementById(
'<%=txtEmail.ClientID %>');objfoucs.focus();
rval =
false;}

else if (varddjoindate == "") {alert(
"Date Of Join must be filled out");
if (objfoucs == null)objfoucs = document.getElementById(
'<%=ddjoindate.Controls[0].ClientID %>');objfoucs.focus();
rval =
false;}

else if (vardob == "") {alert(
"Date Of Birth must be filled out");
if (objfoucs == null)objfoucs = document.getElementById(
'<%=dddob.Controls[0].ClientID %>');objfoucs.focus();
rval =
false;}

else if (varppmanager == "") {alert(
"Please Pick Your Manager");
if (objfoucs == null)objfoucs = document.getElementById(
'<%=ppmanager.ClientID %>');objfoucs.focus();
rval =
false;}

//alert(rval);return rval;
}

</script><script language="javascript" type="text/javascript">function fnDelete(obj) {
if (confirm("Are you sure you want to delete?")) {
return true;}

elsereturn false;}
</script>