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(Oct 18, 2017 07:42 AM)Zens Wrote:  Wrong section this belong to C# section, the sub forums of VB.net

(Oct 18, 2017 07:54 AM)wanbetaaler Wrote:  Thank you bro, i will close this thread and copy my thread over there.

{edit}
Oh did you move this for me?
Thank you, could you remove the thread i created in the vb.net main section and tell me if i can move my threads as well and how i could perfrom such a action.

(Oct 18, 2017 08:14 AM)Ninja Wrote:  Why without databinding though?

(Oct 18, 2017 08:17 AM)rizkyaqew Wrote:  If you think you need to filter the displayed items, you can use DataGridView that binded to BindingSource class, where each items you add to BindingSource will reflected to DataGridView. However, if you want to filter the rows through list view, I'll give you some example 👍 :

Code

// Query text through list items and sub items
       // collect the indexes of each rows.
       static int[] FindText ( ListView list , string text )
      {
          // Use OrdinalIgnoreCase to perform case-insensitive comparison
          // Use Ordinal to perform case-sensitive comparison
          StringComparer comparer = StringComparer.OrdinalIgnoreCase;
          List<int> indices = new List<int>();
          for ( int n = 0 ; n < list.Items.Count ; ++n )
          {
               ListViewItem item = list.Items [ n ];
               if ( comparer.Equals ( item.Text , text ) ) { indices.Add(n); break;}
               for ( int i = 0 ; i < item.SubItems.Count ; ++i )
                   if ( comparer.Equals ( text, item.SubItems [ i ].Text ) ) {indices.Add(n); break;} else continue;
          }
          return indices.ToArray();
     }

     // copy founded rows from list source to list display
     static void DisplayOnlyRows(ListView listSource, ListView listDisplay, string text)
     {
         int[] indices = FindText(listSource, text);        
         for(int n=0; n < indices.Length; listDisplay.Items.Add(listSource.Items[n]), ++n);        
     }

     void Button1_Click(object sender, EventArgs e)
     {
           string textToFind = textBox1.Txt; // get the text to find
           this.listDisplay.Items.Clear(); // clear the display items
           DisplayOnlyRows(this.listSource, this.listDisplay, textToFind); // copy the rows to display
     }
  }

(Oct 18, 2017 08:48 AM)wanbetaaler Wrote:  To be honest, its because i never used databinding and it feares me xD.

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Dear rizkyaqew,

I have tryed your solution, first of all i dont get the solution and second of all I could net get this solution to work. Any further help would be appriciated. Inbox me your contact details?
and is it possible to compare 2 strings that are like each other instead of identical to each other?

(Oct 18, 2017 10:20 AM)rizkyaqew Wrote:  To compare two strings that like each other ? Ok, I'll give your more contrast code in following examples :
Spoiler (Click to View)

Code

public bool MaybeMatch(string source, string pattern)
   {
       // If you want to perform case-sensitive comparision
       // change the OrdinalIgnoreCase with Ordinal
       StringComparison mode = StringComparison.OrdinalIgnoreCase;

       // Will returns true if the source same with pattern,
       // the source starts with pattern, the source ends with pattern,
       // or at least the source is contains the pattern in the character
       // sequences. Otherwise, will returns false;
       return string.Equals(source, pattern, mode) ||
       source.StartsWith(pattern, mode) || source.EndsWith(pattern, mode) ||
       source.IndexOf(pattern, mode) >= 0;
   }
  
   // usages
   public void FindMatchedRows(ListView yourListView, ListView listToDisplayMatchedItems, string requestedText)
   {
        // create a new list to store the matched row indexes.
        List<int> map = new List<int>();
        // here you will loops all items in list view to search
        for(int n = 0; n < yourListView.Items.Count; ++n)
        {
               // first you check the item text, if match, then add to list
              if(MaybeMatch(yourListView.Items[n].Text, requestedText))
              {
                  // We've found matched requested text pattern, add to list
                  map.Add(n);
                  // Since we have found the text, just skip the sub item comparisons
                  continue;
              }
              // Now, we will compare the sub items displayed text,
              // since the first column text is not match.
             bool found = false;
             for(int i = 0; !found && i < yourListView.Items[n].SubItems.Count; ++i)
             {
                   // just set the 'found' variable, if true, the nested loop will
                   // automatically break.
                   found = MaybeMatch(yourListView.Items[n].SubItems[i].Text, requestedText);
             }
            // If the sub items has contains the requested text, add it to list
            if(found) map.Add(n);
        }
       // check whether the result is present
       if(map.Count > 0)
       {
             // now you get the rows index that have matched strings.
             // what will you do now? You can do it here ..
             // the following code is displaying the founded items in listview
             // to another list view
            
             // I need to clear the output listview first.
             listToDisplayMatchedItems.Items.Clear();
             // Loop through indexes map collection
             for(int n=0; n < map.Count; n++)
             {
                    // here is the item with matched strings
                   ListViewItem item = yourListView.Items[map[n]];
                   // add the item to another list view
                  listToDisplayMatchedItems.Items.Add(item);
             }
            // Now the list view that used to display matched strings will
            // display the matched rows.
            listToDisplayMatchedItems.Refresh();
            MessageBox.Show(string.Format("We've found {0} rows that identical to "{1}", thanks for your attention.", map.Count, requestedText),
"Success Filters", MessageBoxButtons.OK, MessageBoxIcon.Information);
       }
       else
       {
             // this block is to handle when the search is found nothing.
            MessageBox.Show(string.Format("The "{0}" is not match with anything data in list, sorry.", requestedText), "Filtering Failed", MessageBoxButtons.OK, MessageBoxIcon.Error);
       }
   }

The above code is just using basic .NET string comparision, for further comparison, like pattern search "t*.txt", use Regular Expression, the .NET class that provides regular expression is System.Text.RegularExpressions.Regex, there should be plenty examples arround MSDN sites. 👍

If you found error due miss-typing or compiler errors, forgive me, since I dont open my Visual Studio when replying your post.
You can feel free ask me if you still got the troubles. 😅