Any possibility to fine tuning below code...

Question

1.00/5 (2 votes)

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C#

  1  private void ShowDataTableInMessageBox()
  2  {
  3      DataTable dataTable = new DataTable();
  4      // Assuming your DataTable has been populated with data, the following is sample data
  5      dataTable.Columns.Add("Id", typeof(int));
  6      dataTable.Columns.Add("Name", typeof(string));
  7      dataTable.Rows.Add(1, "Alice");
  8      dataTable.Rows.Add(2, "Bob");
  9  
 10      StringBuilder sb = new StringBuilder();
 11  
 12      // Traverse the DataTable and add data to the StringBuilder
 13      foreach (DataRow row in dataTable.Rows)
 14      {
 15          foreach (DataColumn column in dataTable.Columns)
 16          {
 17              sb.Append(column.ColumnName + ": " + row[column] + " ");
 18          }
 19          sb.AppendLine(); // Add a new row so each record appears on its own line
 20      }
 21  
 22      // Show message box
 23      MessageBox.Show(sb.ToString(), "DataTable Values");
 24  }
 25  
 26  private void ShowDictionaryInMessageBox()
 27  {
 28      // Assume this is your dictionary
 29      Dictionary<int, string=""> myDictionary = new Dictionary<int, string="">
 30      {
 31          { 1, "Apple" },
 32          { 2, "Banana" },
 33          { 3, "Cherry" }
 34      };
 35  
 36      StringBuilder sb = new StringBuilder();
 37  
 38      // Iterate through the dictionary and add key-value pairs to StringBuilder
 39      foreach (KeyValuePair<int, string=""> kvp in myDictionary)
 40      {
 41          sb.AppendLine($"Key: {kvp.Key}, Value: {kvp.Value}");
 42      }
 43  
 44      // Show message box
 45      MessageBox.Show(sb.ToString(), "Dictionary Values");
 46  }
 47  
 48  private void ShowObjectArrayInMessageBox()
 49  {
 50      // Let's say this is your 2D array of objects
 51      object[][] data = new object[][]
 52      {
 53          new object[] { "Id", 1 },
 54          new object[] { "Name", "Alice" },
 55          new object[] { "Age", 30 },
 56          // new data
 57          new object[] { "City", "New York" },
 58          new object[] { "Occupation", "Engineer" },
 59          new object[] { "Hobby", "Reading" },
 60  
 61          // New data row with "Id"
 62          new object[] { "Id", 2, "Name", "Bob", "Age", 28 },
 63          new object[] { "Id", 3, "Name", "Charlie", "Age", 35 }
 64      };
 65  
 66      StringBuilder sb = new StringBuilder();
 67  
 68      // Traverse the two-dimensional object array and add data to StringBuilder
 69      foreach (object[] row in data)
 70      {
 71          // Each row represents a row, and each object in the row represents a column value of the row.
 72          foreach (object columnValue in row)
 73          {
 74              sb.Append(columnValue.ToString() + " ");
 75          }
 76          sb.AppendLine(); // Add a new row so each record appears on its own line
 77      }
 78  
 79      // Show message box
 80      MessageBox.Show(sb.ToString(), "Object Array Values");
 81  }

What I have tried:

first time tried as above, and would like to fine tune it.

Posted yesterday

Barry Liu from Taipei

Updated yesterday

Richard Deeming

v2

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Comments

Richard Deeming yesterday

Explain what you mean by "fine tune it".

Dave Kreskowiak yesterday

That all depends on what you mean by "fine tune". I don't see much to do to this code because it doesn't do anything really useful.

My biggest complaint is each of these methods does TWO things instead of one. Showing a message box should be up to other UI code, not these methods. These methods should only build a string message and return it.

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George Swan · Answer 1 · 2024-03-28T10:18:00

I would avoid using StringBuilder in your examples. The String.Join method is very useful for expanding a collection of strings. You can try something along these lines.

C#

public static void Main()
 {
     object[][] data =
     [
     ["Id", 1,"Name", "Alice","Age", 30,"City", "New York","Occupation", "Engineer",
     "Hobby", "Reading"],
     ["Id", 2, "Name", "Bob", "Age", 28],
     ["Id", 3, "Name", "Charlie", "Age", 35]
     ];

     List<string> list = [];
     foreach (object[] row in data)
     {
         var result = string.Join(' ', row);
         list.Add(result);
     }
     Console.WriteLine(string.Join("\r\n", list));
     Console.ReadLine();
 }
 /** Prints:
  Id 1 Name Alice Age 30 City New York Occupation Engineer Hobby Reading
  Id 2 Name Bob Age 28
  Id 3 Name Charlie Age 35 
  **/