Error cs1955 non invocable member vector2 cannot be used like a method

Error CS1955 Non-invocable member ‘Particle Emitter.emit’ cannot be used like a method

Error CS1955 Non-invocable member ‘Particle Emitter.emit’ cannot be used like a method (27) Error CS0029 Cannot implicitly convert type ‘bool’ to ‘UnityEngine.Particle[]’ (28) Are my error code. I have been working on this code for a while now I made it exactly how I was told to and it keeps having problems. I am trying to look but can’t find what is wrong with it. Here is my script:

1 Answer 1

Particles is an array of particles (that means that more than one particles are inside it). You can’t use a single particle method on an array of them unless you iterate them (a for loop for example) EDIT: looking the code in more detail i’m not really sure what you want to do with that particle array. If you want to store a reference to the emit bool, you should store it in a bool, not in a particles array (could be something like bool particleState = getcomponent().emit). If you do this declare particleState before the start method so you can access this variable in your update method as well.

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Non-invocable member ‘List

I have an error when tried using FilterFunction like method.

When an error occurs, I do not know how to resolve it?

I’m only using code like:

I created function delegate like:

Then, in class FDBindingList!2.cs , I set this class:

At line this.FilterFunction(item) :

Non-invocable member ‘FDBindingList.FilterFunction’ cannot be used like a method

Cannot convert from ‘JustXin.Windows.Forms.FDBindingList.FilterFunctionDelegate’ to ‘JustXin.Windows.Forms.FilterFunctionDelegate’

and private FilterFunctionDelegateClass

1 Answer 1

FilterFunctionDelegate is both, a class-name and the name of the delegate. This is weird and should cause the error as compiler is not able to distinguish them. However I dounbt you need the class in any way, just go with the delegate within FDBindingList!2.cs (weird file-name btw., the ! might cause problems):

To assign the delegate simply write something similar to this:

The same could also be achieved by using the more .NET-3.5-like Func :

Now set it like this

And call it like this:

.FilterFunctionDelegate’ is a type, which is not valid in the given context and on-invocable member ‘FDBindingList

.FilterFunctionDelegate’ cannot be used like a method. .

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C# Interop Non-invocable member ‘Microsoft.Office.Interop.Excel.Range.End’ cannot be used like a method

I’m using C# Interop to get some values from a Worksheet and I get the following error:

Non-invocable member ‘Microsoft.Office.Interop.Excel.Range.End’ cannot be used like a method.

This is my code:

The thing is that is works if I try as follows:

Am I missing something?

1 Answer 1

Looks like you found a bug in the C# compiler. The bug is actually present in the workaround, it ought to not compile for the same reasons the first snippet did not. Albeit that it is difficult to definitely claim that this is a bug, the C# language spec does not describe what is acceptable in this case.

The Range.End property is an indexed property. Such properties are not formally supported in C#, the language permits only the class indexer (aka this[] ) to be the one-and-only indexed property of a class. But that restriction was lifted in C# version 4, specifically to make interop with COM servers easier. Like Excel, indexed properties are very common in COM object models.

Like the normal indexer, you have to use square brackets. Fix:

And the workaround you had to use in older C# versions is still available:

Hard to guess why it finds () parentheses acceptable in the second snippet. It looks like a bug, swims like a bug and quacks like a bug, so it is probably a bug. Let them know about it by clicking the New Issue button. I doubt they’ll fix it but there might be more wrong than meets the eye.

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C# Interop Non-invocable member ‘Microsoft.Office.Interop.Excel.Range.End’ cannot be used like a method

I’m using C# Interop to get some values from a Worksheet and I get the following error:

Non-invocable member ‘Microsoft.Office.Interop.Excel.Range.End’ cannot be used like a method.

This is my code:

The thing is that is works if I try as follows:

Am I missing something?

1 Answer 1

Looks like you found a bug in the C# compiler. The bug is actually present in the workaround, it ought to not compile for the same reasons the first snippet did not. Albeit that it is difficult to definitely claim that this is a bug, the C# language spec does not describe what is acceptable in this case.

The Range.End property is an indexed property. Such properties are not formally supported in C#, the language permits only the class indexer (aka this[] ) to be the one-and-only indexed property of a class. But that restriction was lifted in C# version 4, specifically to make interop with COM servers easier. Like Excel, indexed properties are very common in COM object models.

Like the normal indexer, you have to use square brackets. Fix:

And the workaround you had to use in older C# versions is still available:

Hard to guess why it finds () parentheses acceptable in the second snippet. It looks like a bug, swims like a bug and quacks like a bug, so it is probably a bug. Let them know about it by clicking the New Issue button. I doubt they’ll fix it but there might be more wrong than meets the eye.

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Error cs1955 non invocable member

Im getting a couple of errors. working with this excel object

Any Help would be much appreciated.

You can see a better looking example of the code here:
http://share.codelove.org/BlahBlah-2BdWFb9Q.html

error CS1501: No overload for method ‘Open’ takes ‘2’ arguments
error CS1955: Non-invocable member ‘Microsoft.Office.Interop.Excel._Workbook.Sheets’ cannot be used like a method.

Your problems are lines 36 and 37.

error CS1501: No overload for method ‘Open’ takes ‘2’ arguments

means that
wb = Microsoft.Office.Interop.Excel.Workbooks.Open(@ «c:test.xls» ,1);
Is wrong, try using Open(@ «c:test.xls» ); without the ,1 .

error CS1955: Non-invocable member ‘Microsoft.Office.Interop.Excel._Workbook.Sheets’ cannot be used like a method.

means that .Sheets is a variable, not a function.
sh = (Microsoft.Office.Interop.Excel.Worksheet)wb.Sheets(1);
Try
sh = (Microsoft.Office.Interop.Excel.Worksheet)wb.Sheets[1];

Although, It maybe [0] because it should start from 0. But who knows with Microsoft.

I got rid of 1 error with

But the other one is lingering

wb = Microsoft.Office.Interop.Excel.Workbooks.Open(@ «c:test.xls» ); wb = Microsoft.Office.Interop.Excel.Workbooks.Open(@ «c:\test.xls» ); wb = Microsoft.Office.Interop.Excel.Workbooks.Open( «c:\test.xls» );

all the same error as before I also tried some wierd stuff.

which game me error code.

error CS0079: The event ‘Microsoft.Office.Interop.Excel.WorkbookEvents_Event.Open’ can only appear on the left hand side of += or -=

Did the Sheets error get solved?

You need to know the Open() function’s proper argument list then. I don’t use Visual C++ so I can’t tell you. But Intellisense should tell you what it is.

Yea the sheets error seems to be good now, much thanks

Hey and i noticed that I list the class object as workbooks and then later. I use workbook.

Thats the way i have seen it in examples.

The intellisense does’nt list the correct options only 2. Equal and ReferenceEqual

also heres the msdn pages..

lastly could it be something declared wrong in the class or namespace ?

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protected void Page_Load(object sender, EventArgs e)
    {
        ReportDocument rptDoc=new ReportDocument();
        DataSet_example ds =new DataSet_example();
        SqlConnection conn=new SqlConnection();
        conn.ConnectionString = System.Configuration.ConfigurationManager.ConnectionStrings["con1"].ConnectionString;
        DataTable dt=new DataTable();
        dt.TableName="Crystal report example";
        SqlDataAdapter da=new SqlDataAdapter("Select * from sample",conn);
        da.Fill(dt);
        ds.Tables(0).Merge(dt);
        rptDoc.Load(Server.MapPath("CrystalReport.rpt"));
        rptDoc.SetDataSource(ds);
        CrystalReportViewer1.ReportSource=rptDoc;

    }

ds.Tables[0].Merge(dt);

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