Using Dictionary Class type in C#

Question

Using Dictionary Class type in C#

John 511

I am having issues with using the Dictionary class type after declaring a parameter.

It resulted in a null value error when it was compiled.

Can anyone fix this?

using System; using System.Windows.Forms; using Microsoft.Office.Interop.Word; using System.Collections.Generic;    namespace Word_Doc_002 {     public partial class ThisDocument     {          Dictionary dictionWord;                            private void ThisDocument_Startup(object sender, System.EventArgs e)         {             dictionWord.Application.CheckSpelling("big", WdDictionaryType.wdSpelling); //Compile time error. dictionWord was Null.          }          private void ThisDocument_Shutdown(object sender, System.EventArgs e)         {         }          #region VSTO Designer generated code          /// <summary>         /// Required method for Designer support - do not modify         /// the contents of this method with the code editor.         /// </summary>         private void InternalStartup()         {             this.Startup += new System.EventHandler(ThisDocument_Startup);             this.Shutdown += new System.EventHandler(ThisDocument_Shutdown);         }          #endregion     } }

John 511 Reputation points

2023-07-04T20:53:00.3066667+00:00

Answer accepted by question author

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Your answer

John 511 Reputation points

2023-07-04T20:53:00.3066667+00:00

Answer 1

Hui Liu-MSFT 48,706 Microsoft External Staff

Hi,@John.Welcome Microsoft Q&A. The Dictionary object being null and resulting in a "Object reference not set to an instance of an object" error. Dictionary objects that represent custom dictionaries are members of the Dictionaries collection.

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John 511 Reputation points

2023-07-05T10:00:02.0366667+00:00

Okay.

Since that you told me dictionary objects that represent custom dictionaries are members of the dictionaries collection, can you provide me some examples of how the dictionaries collection works?

Can you also provide me some examples from selected code snippets if it is possible?

Hui Liu-MSFT 48,706 Microsoft External Staff

Hi,@John.Here is a code sample.

 public partial class ThisDocument
    {
      
        Application application = new Application();
        Dictionaries dictionaries;
        Dictionary dictionWord;

        private void ThisDocument_Startup(object sender, System.EventArgs e)
        {
            dictionaries = application.CustomDictionaries;
            dictionWord = dictionaries.Add("C://...\\CustomDictionary.dic");
          

            foreach (Dictionary dictionary in dictionaries)
            {
                
                Console.WriteLine(dictionary.Name);
            }

            dictionWord.Application.CheckSpelling("big", WdDictionaryType.wdSpelling); 
        }
...
}

Hui Liu-MSFT 48,706 Reputation points Microsoft External Staff

2023-07-10T07:34:06.09+00:00

Hi,@John. Is there any update to the question? Did my answer solve your problem? If so, you could accept it as the answer. It's helpful for community members with related questions.

Answer 2

Bruce (SqlWork.com) 81,976 Volunteer Moderator

don't see any code to initial dictionWord to any value, so its null.

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Using Dictionary Class type in C#

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