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'TMP_Text' does not contain a definition for 'ignoreRectMaskCulling'

I m trying to run a unity script and every time it throws this error while compiling
'TMP_Text' does not contain a definition for 'ignoreRectMaskCulling'
and no accessible extension method 'ignoreRectMaskCulling' accepting a first argument of type 'TMP_Text' could be found (are you missing a using directive or an assembly reference?)
if (verticalScrollbar != null)
{
textComponent.ignoreRectMaskCulling = true;
verticalScrollbar.onValueChanged.AddListener(OnScrollbarValueChange);
}

Xamarin Microcharts error: The type or namespace name 'Entry' does not exist in the namespace 'Microcharts'

I try to display a chart from Microcharts, but I receive this error:
/Users/pizhev/Documents/WeatherLocationInfo 1.6.8/WeatherLocationInfo/MainPage.xaml.cs(27,27): Error CS0234: The type or namespace name 'Entry' does not exist in the namespace 'Microcharts' (are you missing an assembly reference?) (CS0234) (WeatherLocationInfo)
I fallow this link: Tutorial and before two months this method work perfectly.
So when I try to change:
using Entry = Microcharts.Entry;
to
using Entry = Microcharts.ChartEntry;
I receive a many errors like this:
/Users/pizhev/Documents/WeatherLocationInfo 1.6.8/WeatherLocationInfo/MainPage.xaml.cs(243,243): Error CS1503: Argument 2: cannot convert from 'Xamarin.Forms.Entry' to 'Microcharts.ChartEntry' (CS1503) (WeatherLocationInfo)
and this:
/Users/pizhev/Documents/WeatherLocationInfo 1.6.8/WeatherLocationInfo/MainPage.xaml.cs(44,44): Error CS1061: 'ChartEntry' does not contain a definition for 'Text' and no accessible extension method 'Text' accepting a first argument of type 'ChartEntry' could be found (are you missing a using directive or an assembly reference?) (CS1061) (WeatherLocationInfo)
So what is changed in Microcharts and how can I fix this errors ?

Open a spreadsheet document from a stream (Open XML SDK)

I'm following the following article about how to work with the OpenXML SDK:
https://msdn.microsoft.com/en-us/library/office/ff478410.aspx
I have the following code:
// Open a SpreadsheetDocument based on a stream.
SpreadsheetDocument spreadsheetDocument
= SpreadsheetDocument.Open(stream, true);
// Add a new worksheet.
WorksheetPart newWorksheetPart = spreadsheetDocument.WorkbookPart.AddNewPart<WorksheetPart>();
newWorksheetPart.Worksheet = new Worksheet(new SheetData());
newWorksheetPart.Worksheet.Save();
Sheets sheets = spreadsheetDocument.WorkbookPart.Workbook.GetFirstChild<Sheets>();
string relationshipId = spreadsheetDocument.WorkbookPart.GetIdOfPart(newWorksheetPart);
// Get a unique ID for the new worksheet.
uint sheetId = 1;
if (sheets.Elements<Sheet>().Count() > 0)
{
sheetId = sheets.Elements<Sheet>().Select(s => s.SheetId.Value).Max() + 1;
}
// Give the new worksheet a name.
string sheetName = "Sheet" + sheetId;
// Append the new worksheet and associate it with the workbook.
Sheet sheet = new Sheet() { Id = relationshipId, SheetId = sheetId, Name = sheetName };
sheets.Append(sheet);
spreadsheetDocument.WorkbookPart.Workbook.Save();
// Close the document handle.
spreadsheetDocument.Close();
But I keep getting the following error:
Severity Code Description Project File Line Suppression State
Error CS1729 'Worksheet' does not contain a constructor that takes 1 arguments MyProject C:\Users\brkar1\Documents\Visual Studio 2015\Projects\MyProject\MyProject\Controllers\HomeController.cs 139 Active
Error CS0246 The type or namespace name 'SheetData' could not be found (are you missing a using directive or an assembly reference?) MyProject C:\Users\brkar1\Documents\Visual Studio 2015\Projects\MyProject\MyProject\Controllers\HomeController.cs 139 Active
Error CS1061 'WorksheetPart' does not contain a definition for 'Worksheet' and no extension method 'Worksheet' accepting a first argument of type 'WorksheetPart' could be found (are you missing a using directive or an assembly reference?) MyProject C:\Users\brkar1\Documents\Visual Studio 2015\Projects\MyProject\MyProject\Controllers\HomeController.cs 140 Active
Error CS1061 'WorkbookPart' does not contain a definition for 'Workbook' and no extension method 'Workbook' accepting a first argument of type 'WorkbookPart' could be found (are you missing a using directive or an assembly reference?) MyProject C:\Users\brkar1\Documents\Visual Studio 2015\Projects\MyProject\MyProject\Controllers\HomeController.cs 142 Active
Error CS1061 'Sheets' does not contain a definition for 'Elements' and no extension method 'Elements' accepting a first argument of type 'Sheets' could be found (are you missing a using directive or an assembly reference?) MyProject C:\Users\brkar1\Documents\Visual Studio 2015\Projects\MyProject\MyProject\Controllers\HomeController.cs 147 Active
Error CS0246 The type or namespace name 'Sheet' could not be found (are you missing a using directive or an assembly reference?) MyProject C:\Users\brkar1\Documents\Visual Studio 2015\Projects\MyProject\MyProject\Controllers\HomeController.cs 147 Active
Error CS1061 'Sheets' does not contain a definition for 'Elements' and no extension method 'Elements' accepting a first argument of type 'Sheets' could be found (are you missing a using directive or an assembly reference?) MyProject C:\Users\brkar1\Documents\Visual Studio 2015\Projects\MyProject\MyProject\Controllers\HomeController.cs 149 Active
Error CS0246 The type or namespace name 'Sheet' could not be found (are you missing a using directive or an assembly reference?) MyProject C:\Users\brkar1\Documents\Visual Studio 2015\Projects\MyProject\MyProject\Controllers\HomeController.cs 149 Active
Error CS0246 The type or namespace name 'Sheet' could not be found (are you missing a using directive or an assembly reference?) MyProject C:\Users\brkar1\Documents\Visual Studio 2015\Projects\MyProject\MyProject\Controllers\HomeController.cs 156 Active
Error CS0246 The type or namespace name 'Sheet' could not be found (are you missing a using directive or an assembly reference?) MyProject C:\Users\brkar1\Documents\Visual Studio 2015\Projects\MyProject\MyProject\Controllers\HomeController.cs 156 Active
Error CS1061 'Sheets' does not contain a definition for 'Append' and no extension method 'Append' accepting a first argument of type 'Sheets' could be found (are you missing a using directive or an assembly reference?) MyProject C:\Users\brkar1\Documents\Visual Studio 2015\Projects\MyProject\MyProject\Controllers\HomeController.cs 157 Active
Error CS1061 'WorkbookPart' does not contain a definition for 'Workbook' and no extension method 'Workbook' accepting a first argument of type 'WorkbookPart' could be found (are you missing a using directive or an assembly reference?) MyProject C:\Users\brkar1\Documents\Visual Studio 2015\Projects\MyProject\MyProject\Controllers\HomeController.cs 158 Active
Why do I get this error messages?

Make sure you have a reference to DocumentFormat.OpenXml.dll added to your project.

AutoCompleteStringCollection in wpf

I just want to do the following in .net 4.0 wpf windows application.
var source = new AutoCompleteStringCollection();
source.AddRange(Contract_Extracter.GlobalVariables.customerList);
textBoxClientID.AutoCompleteCustomSource = source;
textBoxClientID.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
textBoxClientID.AutoCompleteSource = AutoCompleteSource.CustomSource;
and I'm getting following errors,
The type or namespace name AutoCompleteStringCollection could not be found (are you missing a using directive or an assembly reference?)
System.Windows.Controls.TextBox does not contain a definition for AutoCompleteCustomSource and no extension method AutoCompleteCustomSource accepting a first argument of type 'System.Windows.Controls.TextBox' could be found (are you missing a using directive or an assembly reference?)
3.The name AutoCompleteSource does not exist in the current context
I have already added using System.Windows and the reference. What is wrong here? what are the assemblies should I refer?
Thanks

How to rectify Namespace errors in a Windows Store class library in Windows 8 and Visual Studio 2012?

I'm developing a classlibrary(Windows Store Apps) for XMPP in windows 8, I'm Getting these errors, I'd given all the required references like,
System.Net
System.Threading
and so on, But Still these errors arises,
Error 15 The type or namespace name 'Formatting' could not be found (are you missing a using directive or an assembly reference?)
Error 16 The type or namespace name 'Formatting' could not be found (are you missing a using directive or an assembly reference?)
Error 17 The type or namespace name 'Formatting' could not be found (are you missing a using directive or an assembly reference?)
Error 7 The type or namespace name 'ICloneable' does not exist in the namespace 'System' (are you missing an assembly reference?)
Error 9 The type or namespace name 'IPAddress' could not be found (are you missing a using directive or an assembly reference?)
Error 12 The type or namespace name 'IPAddress' could not be found (are you missing a using directive or an assembly reference?)
Error 13 The type or namespace name 'IPEndPoint' could not be found (are you missing a using directive or an assembly reference?)
Error 6 The type or namespace name 'ListDictionary' could not be found (are you missing a using directive or an assembly reference?)
Error 14 The type or namespace name 'ListDictionary' could not be found (are you missing a using directive or an assembly reference?)
Error 2 The type or namespace name 'Sockets' does not exist in the namespace 'System.Net' (are you missing an assembly reference?)
Error 3 The type or namespace name 'Sockets' does not exist in the namespace 'System.Net' (are you missing an assembly reference?)
Error 4 The type or namespace name 'Sockets' does not exist in the namespace 'System.Net' (are you missing an assembly reference?)
Error 5 The type or namespace name 'Stack' could not be found (are you missing a using directive or an assembly reference?)
Error 1 The type or namespace name 'Timer' could not be found (are you missing a using directive or an assembly reference?)
Error 8 The type or namespace name 'Timer' could not be found (are you missing a using directive or an assembly reference?)
Error 10 The type or namespace name 'Timer' could not be found (are you missing a using directive or an assembly reference?)
Error 18 The type or namespace name 'XmlTextWriter' could not be found (are you missing a using directive or an assembly reference?)
Error 11 Using the generic type 'System.Collections.Generic.Queue' requires 1 type arguments
Please anyone help me or suggest me the solution. . .
/// <summary>
/// returns the Xml, difference to the Xml property is that you can set formatting properties
/// </summary>
/// <param name="format"></param>
/// <param name="indent"></param>
/// <returns></returns>
public string ToString(Formatting format, int indent)
{
return BuildXml(this, format, indent, ' ');
}
#region << Xml Serializer Functions >>
private string BuildXml(Node e, Formatting format, int indent, char indentchar)
{
if ( e != null )
{
System.IO.StringWriter tw = new StringWriter();
XmlTextWriter w = new XmlTextWriter(tw);
w.Formatting = format;
w.Indentation = indent;
w.IndentChar = indentchar;
WriteTree(this, w, null);
return tw.ToString();
}
else
{
return "";
}
}
The 'Formatting' error is coming from this code block, Even though i've given the reference as system.xml
Theres no Option to Resolve,

Based on a quick google search for one of the comments in the code you've provided, I found that it's from here.
As this isn't your own code (I assume - perhaps incorrectly!) that you're attempting to compile for Windows Store Apps which presently targets the 3.5 framework and has references to things such as System.Windows.Forms listed in the project file, it'll likely not work until you rewrite portions of the code to target the Windows Store version of the framework. For example, XmlTextWriter is not listed under the System.Xml namespace in the [.NET For Windows Store Apps] API4.
In short - code for the "full" .net Framework cannot (other than the simplest of snippets) just be recompiled targeting the Windows Store .NET API.