The type or namespace name could not be found unity как исправить

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You may receive an error message indicating Visual Studio error cs0246. There are several ways to solve this problem, and we will deal with it shortly. g.Unity error: CS0246: Could not find type or namespace name ‘image’ (are you missing a take directive or an assembly reference?) “

Error CS0246: The type or namespace name ‘________’ could not be found. Do you still have any guidance on using personal directories? The root cause. This error occurs when the namespace you are trying to use does not exist.

Error CS0246: The type or namespace name ‘________’ could not be found. Don’t have a using directive from your assembly references? The root cause. This error always occurs when the namespace you are trying to use does not exist.

Typeor namespace alias ‘type / namespace’ not found (is there a public directive or strong assembly reference missing?)

The type or namespace in which it is used in a program has not previously been found. Perhaps you have defined a reference ( references ) to the assembly containing the type, or you probably did not add the required using statement. Or it may have a congregation problem that people are trying to link to.

• There are two answers to this error. The first is when you need to correct the namespace name to match the existing one. The goal is to rebuild the newly created custom namespace.

  Did you misspell a name like “also”? Without the correct name, the user compiler cannot find a definition for the type or namespace. This happens all the time because the case used for the type name is incorrect. For example, Ds; dataset creates CS0246 because the s in the dataset must be uppercase.

  


• If this particular error is manufacturer namespace, add a reference ( References ) directly to the assembly containing its namespace. Names? For example, your code could be using the Accessibility directive . However, if your project is not referenced In its assembly Accessibility.dll, error CS0246 will be declared. For information see Boards a in Project

• If an error can occur with the type name, did you include the correct using statement, or, if that failed, did you just fully define the name associated with the type? See the following document: DataSet ds . To use the DataSet part, you need two things. First, you need a reference to this assembly, which contains a definition that is of type DataSet . Second, you need to use with one directive for the entire namespace that contains the DataSet . Since DataSet is in each of our System.Data namespaces, you should generally follow the instructions at the beginning of your preferred code for argumentation: using System.Data .

  How do I fix error CS0103?

  CS0103 is called when you use an address for a variable or method that does not exist in the situation in which you are using it. To fix CS0103, you need to fix any variable or system name from which it is declared or possibly referenced.

  The using directive is definitely not required. However, if you skip a statement, you must fully meet the criteria for a DataSet if you do reference it. Fully qualified means that whenever you give time to a type in your codeThat is, most people specify both the type and the namespace. If you omit the using directive from the previous example, you would compose System.Data.DataSet ds to get ds instead of <. to declare the code> DataSet ds .

• Have you used an appropriate variable to determine where the type was expected? For example, if you use the Type object, preferably the actual type, in the is statement, you will encounter error CS0246.

• 

  Did you mean an installation built for a version of the platform that is larger than the target program? Or maybe you mentioned a project targeting a higher version of the framework than what you see in the target program structure? For example, you are working on a distribution targeting the .NET Framework 4.6.1 and a project-specific use case targeting the .NET Framework 4.7.1. Then you will get error CS0246.

• How do I fix namespace errors?

  Select View >> Solution Explorer.Right click on your project and select Properties.On the Project Properties tab, click Compile.Select Advanced Compilation Options.Choose . NET Framework 4 from the Target Framework dropdown.

  Have you used the alias information without specifying the full legal name? The using alias directive typically uses the using directives in a source file to resolve forms. In the next exampleCS0246 is not generated because the type List is not fully defined. The using directive in System.Collections.Generic does not prevent the error.

    with System.Collections.Generic;// The following announcement has been moved to CS0246.using myAliasName = List ;// Fill in the spec list to avoid errors.using myAliasName2 = System.Collections.Generic.List ; 

  If you get this type of error in code you've tried, first check Solution Explorer for missing or dangerous links. Do I need to reinstall the NuGet package? For more information on improving the search for system credentials, see Allowing file credentials in Team Build . When all links seem to be covered, check your source code check time to see what changed in your .csproj file and / or city source file.

  If you haven't yet evaluated the link, use Object Explorer to inspect the assembly that should contain this process namespace and see if this namespace might exist. When using Object Browser to verify that this assembly withtakes over the namespace, try removing the using information for the namespace and explore other language factions. The main problem can arise especially with a different type of different assembly.

  // CS0246.cs// with System.Diagnostics;  public class maclass      // The next line calls CS0246. To fix the error, uncomment it.   // type of namespace using directive to get this attribute,   // system diagnostics.   [Conditional ("A")]   invalid public test ()                 Static Font Empty Main ()              

  // CS0246b.csSystem use;  Example class class     generic boolean support (object o, type t)              // The used string calls CS0246. You must wear one       // a serious type such as ExampleClass, String, or Type.        should (oh there are t)                      returns true;                  return at is incorrect;          Class program      Public static void Main ()              ExampleClass myC corresponds to the new ExampleClass ();        myC.supports (myC, myC.GetType ());         

Keywords: Unity, Solution for common issues

failed to open source file: ‘Packages/com.unity.render-pipelines.xxx’

Error at compiling assets:

Shader error in 'XXX': failed to open source file: 'Packages/com.unity.render-pipelines.lightweight/ShaderLibrary/Core.hlsl' at line 72 (on d3d11)

Reason:
Render pipelines were missed in project, e.g. you created a project using 3D template.

Solution:
Create a project using LWRP template or High Definition RP template, these two templates provided new render pipelines.

Reference:
[LWRP] UPGRADING LWRP PACKAGE TO 7.0.0 BREAKS FORWARDRENDERDATA ASSET IN RESOURCE FILES
https://issuetracker.unity3d.com/issues/lwrp-upgrading-lwrp-package-to-7-dot-0-0-breaks-forwardrenderdata-asset-in-resource-files

Assets go pink

Issue:
Assets in scene go pink (purple).

Reason:
1, Materias and shaders of assets were missed.
2, Materias and shaders of assets using old render pipeline which not support in new verson.

Solution:
Retarget materias and shaders in meshes or update materials and shaders.

Reference:
everything became pink
https://answers.unity.com/questions/168624/everything-became-pink.html

Error CS0246: The type or namespace name ‘float2’ could not be found

Error at building project

error CS0246: The type or namespace name 'float2' could not be found (are you missing a using directive or an assembly reference?)

Caused by:
Missing requisite package.

Solution:
Install Mathematics: Windows -> Package Manager -> Select Mathematics and click Install.

An assembly with the same simple name ‘SyntaxTree.VisualStudio.Unity.Bridge’ has already been importe

Error log in editor console:

error CS1704: An assembly with the same simple name 'SyntaxTree.VisualStudio.Unity.Bridge' has already been imported. Try removing one of the references (e.g. 'D:Program_Filesx86Microsoft Visual Studio Tools for Unity16.0EditorSyntaxTree.VisualStudio.Unity.Bridge.dll') or sign them to enable side-by-side.

Error log on compiling project in Visual Studio:

error CS0234: The type or namespace name 'UI' does not exist in the namespace 'UnityEngine'

Solution:

1. Close Editor and Visual Studio.
2. Remove file C:Program Files(x86)Microsoft Visual Studio Tools for Unity16.0EditorSyntaxTree.VisualStudio.Unity.Bridge.dll.
3. Remove files .sln and .csproj and remove directories Library and obj.
4. Reimport project and open Editor and Visual Studio.

It is not a lack of love, but a lack of friendship that makes unhappy marriages. ― Friedrich Nietzsche, Twilight of the Idols

FIX FOR ALL UNITY VERSIONS
So, this is how I fixed this problem after multiple failed attempts and bad advice from a countless number of people who think they know how computers work.
This issue is caused by, loading in old projects, altering visual studio, switching from computer, using different Unity versions, updating Unity, bad file management and a few other causes which I couldn’t care to put down here.
Non of the steps below are extreme, they are all but necessary.So lets fix your project mate, so you don’t have to sweat like I did, which I did a lot ahaha =P
— Making sure your Unity software is closed during the fix:

1. DO NOT START UP UNITY

2. MAKE SURE UNITY HUB AND OTHER UNITY PROGRAMS ARE CLOSED (Via both taskbar icon & task manager, Unity will resolve the packages if it is opened, so make sure it is closed)
   — Deleting the first problem:

3. Go to C:UsersUSERNAMEAppDataLocalUnitycachepackagespackages.unity.com

4. Delete ALL the folders inside «packages.unity.com»
   — Deleting the second problem:

5. Go to your project folder, so your game folder, in my case it is saved in the USER folder which is named after your computer’s username, so for me it is «C:UsersUSERNAMEYOUR PROJECTLibraryPackageCache»

6. Delete ALL the folders inside the «PackageCache»
   — Deleting the third and final problem:

7. Go to C:UsersUSERNAMEYOUR PROJECTPackages

8. Delete BOTH manifest.json & packages-lock.json (These hold the packages list and versions, packages with versions will be resolved/updated when unity is open or launched)

9. Start up your Unity editor and… hopefully your console will be empty.
   * Note that the USERNAME is the directory paths needs to be replaced with YOUR computer username
   ** YOUR PROJECT is a place holder for the name of your project
   *** The appdata directory can easily be found by entering %appdata% in the windows search bar on the bottom left of your display
   I want to state in these last lines how bad Unity is designed and how careless the developers are towards their consumers, this is a terrible service to subscribe to, liability wise.This bug bothers an enormous majority of their user base and is completely ignored.
   For a company that tries to make game making easy, they are making it awfully hard on people who are trying to create their dreams with THEIR software.

Trabla Description:

1. Simple project


2. Script «MyBuildScript.cs» to add custom menu to Unity3d Editor
— compile project for Androdi or iOS

Located in Assets folder

3. Source code of  «MyBuildScript.cs» script:

using UnityEngine;

using System.Collections;

using System.Collections.Generic;

using UnityEditor;

class MyBuildScript

{

static string[] SCENES = FindEnabledEditorScenes();

static string APP_NAME = «Demo»;

static string TARGET_DIR = «C:\Users\Public\Documents\Unity Projects\demo-buildScript»;

[MenuItem(«Custom/CI/Build Mac OS X»)]  // Creates menu item in unity editor

public static void PerformMacOSXBuild()

{

string target_dir = APP_NAME + «.app»;

GenericBuild(SCENES, TARGET_DIR + «/» + target_dir, BuildTarget.StandaloneOSXIntel, BuildOptions.None);

}

[MenuItem(«Custom/CI/Build Android»)]   // Creates menu item in unity editor

public static void PerformAndroidBuild()

{

string target_dir = APP_NAME + «.apk»;

GenericBuild(SCENES, TARGET_DIR + «/» + target_dir, BuildTarget.Android, BuildOptions.None);

}

private static string[] FindEnabledEditorScenes()

{

List<string> EditorScenes = new List<string>();

foreach (EditorBuildSettingsScene scene in EditorBuildSettings.scenes)

{

if (!scene.enabled) continue;

EditorScenes.Add(scene.path);

}

return EditorScenes.ToArray();

}

static void GenericBuild(string[] scenes, string target_dir, BuildTarget build_target, BuildOptions build_options)

{

EditorUserBuildSettings.SwitchActiveBuildTarget(build_target);

string res = BuildPipeline.BuildPlayer(scenes, target_dir, build_target, build_options);

if (res.Length > 0)

{

throw new System.Exception(«BuildPlayer failure: » + res);

}

}

}

4. Try to run build script from Editor  — menu «Custom» -> «CI» -> «Build Android»

5. Exception:

Assets/MyBuildScript.cs(4,7): error CS0246: The type or namespace name `UnityEditor’ could not be found. Are you missing a using directive or an assembly reference?

Solving:


1. Create folder «Editor» in «Assets» folder

2. Move script «MyBuildScript.cs» to «Assets» -> «Editor» folder

All scripts with using UnityEditor; should be placed in «Assets» -> «Editor» folder