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description | title | ms.date | f1_keywords | helpviewer_keywords |
---|---|---|---|---|
Compiler Error CS1061 |
Compiler Error CS1061 |
05/01/2021 |
CS1061 |
CS1061 |
Compiler Error CS1061
‘type’ does not contain a definition for ‘name’ and no accessible extension method ‘name’ accepting a first argument of type ‘type’ could be found (are you missing a using directive or an assembly reference?).
This error occurs when you try to call a method or access a class member that does not exist.
Example
The following example generates CS1061 because Person
does not have a DisplayName
method. It does have a method that is called WriteName
. Perhaps that is what the author of this source code meant to write.
public class Person { private string _name; public Person(string name) => _name = name; // Person has one method, called WriteName. public void WriteName() { System.Console.WriteLine(_name); } } public class Program { public static void Main() { var p = new Person("PersonName"); // The following call fails because Person does not have // a method called DisplayName. p.DisplayName(); // CS1061 } }
To correct this error
- Make sure you typed the member name correctly.
- If you have access to modify this class, you can add the missing member and implement it.
- If you don’t have access to modify this class, you can add an extension method.
See also
- The C# type system
- Extension Methods
I’m having a bit of a pain here and I just can’t figure out what’s wrong.
I have an ASP.net project which I deployed on a server. At first everything seemed allright, no Errors whatsoever. However, as a last adition I wanted to add a search function to a fairly large list so I added the following syntax to my mark-up:
<td>
Search Server:
<asp:TextBox ID="txtSearch" runat="server" />
<asp:Button ID="btnLookup" runat="server" OnClick="btnLookup_Clicked" Text="Search" />
<asp:Label ID="lblFeedback" runat="server" />
</td>
and the following in code behind:
protected void btnLookup_Clicked(object sender, EventArgs e)
{
lblFeedback.Text = "";
Session["IsSearch"] = true;
LoadServerList();
}
When I run this locally it works just fine as I expect.
HOWEVER!
When I copy these files to the server I get a compilation error:
Compiler Error Message: CS1061: ‘ ASP.ntservice_ reports_ reports_ serverlist_ manage_ aspx ‘ does not contain a definition for ‘btnLookup_ Clicked’ and no extension method ‘btnLookup_ Clicked’ accepting a first argument of type ‘ASP.ntservice_ reports_ reports_ serverlist_ manage_ aspx’ could be found (are you missing a using directive or an assembly reference?)
it says there is nothing that handles my Clicked event although it does work when I run it through Visual studio.
any ideas?
EDIT:
What I tried myself is
- renaming button
- deleting and readding the button
- add through designer
- renaming click event
- removing the event from markup allows normal execution … :/
I am new to .NET visual studio, building windows Form Application.
I had the following error described below, when trying to build a solution. I am not sure if it has to do with something related to the file ‘SuperAdventure.SuperAdventure’ or a control that was not specified.
‘SuperAdventure.SuperAdventure’ does not contain a definition for ‘label5_Click‘ and no extension method ‘label5_Click’ accepting a first argument of type ‘SuperAdventure.SuperAdventure’ could be found (are you missing a using directive or an assembly reference?)
This is the error code with the error showing a red squiggly/line under the code in the marked line.
// lblExperience
//
this.lblExperience.AutoSize = true;
this.lblExperience.Location = new System.Drawing.Point(110, 73);
this.lblExperience.Name = "lblExperience";
this.lblExperience.Size = new System.Drawing.Size(35, 13);
this.lblExperience.TabIndex = 6;
this.lblExperience.Text = "label7";
this.lblExperience.Click += new System.EventHandler(this.label5_Click); // <-- squiggly line here
and on the output it gives this:
-
1>—— Build started: Project: Engine, Configuration: Release Any
CPU —— -
1> Engine -> C:UsersAdminDocumentsVisual Studio
2013ProjectsSuperAdventureEnginebinReleaseEngine.dll -
2>——
Build started: Project: SuperAdventure, Configuration: Release Any
CPU —— -
2>c:UsersAdminDocumentsVisual Studio
2013ProjectsSuperAdventure.Designer.cs(119,70,119,82): error
CS1061: ‘SuperAdventure.SuperAdventure’ does not contain a
definition for ‘label5_Click’ and no extension method
‘label5_Click’ accepting a first argument of type
‘SuperAdventure.SuperAdventure’ could be found (are you missing a
using directive or an assembly reference?) ========== Build: 1
succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
Please let me know if I need to provided any more information.
PS: I am a beginner trying to learn some C# by building a RPG game as an exercise.
- Remove From My Forums
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Question
-
Hi Everyone,
I have an error message when I try to run my program, this is error CS1061 like show below. But actually my program is success full to run before.. But I don’t know why suddenly when I try to compile there’s any error :
—— Build started: Project: Latihan1, Configuration: Debug x86 ——
c:userslinadocumentsvisual studio 2010ProjectsLatihan1Latihan1Form1.Designer.cs(40,55): error CS1061: ‘Latihan1.Form1’ does not contain a definition for ‘Form1_Load’ and no extension method ‘Form1_Load’ accepting a first argument of type ‘Latihan1.Form1’
could be found (are you missing a using directive or an assembly reference?)Compile complete — 1 errors, 0 warnings
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
Answers
-
It looks like you accidentally created a form Load event handler, then deleted it from code, but not the designer. To fix:
Open up your form in the designer, and go to the events in the properties page. Delete the «Form1_Load» event on the form’s Load…
Reed Copsey, Jr. — http://reedcopsey.com
If a post answers your question, please click «Mark As Answer» on that post and «Mark as Helpful«.-
Marked as answer by
Saturday, November 26, 2011 6:25 AM
-
Marked as answer by
error CS1061: Type `UnityEngine.UI.Image’ does not contain a definition for `enable’ and no extension method `enable’ of type `UnityEngine.UI.Image’ could be found. Are you missing an assembly reference?
Код:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class HealthSystem : MonoBehaviour {
public int health;
public int numberOfLives;
public Image[] lives;
public Sprite fullLive;
public Sprite emptyLive;
// Use this for initialization
void Start () {
}
// Update is called once per frame
void Update ()
{
for (int i = 0; i < lives.Length; i++)
{
if (i < numberOfLives)
{
lives[i].enable = true;
}
else
{
lives[i].enable = false;
}
}
}
}
-
Вопрос заданболее трёх лет назад
-
4429 просмотров
Компилятор тебе четко говорит, что у Image, нет свойства enable. Чтобы это проверить, идешь на офф сайт и ищешь класс Image. Находим инфу. Убеждаемся, что компилятор не соврал и изменяем на правильное свойство
Properties enabled
Как я понял у тебя есть на сцене много Image в канвасе, и тебе нужно их включать и выключать. Если я прав, то сделай вот что: обьяви не public Image[] lives; а public GameObject[] lives; так как на сцене у тебя обьекты GameObject, а Image — это компонент обьекта. И еще используй не enabled, а lives[i].SetActive(true/false);
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