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  4. Retrieving multiple items from listview

Retrieving multiple items from listview

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  • M mrithula8

    Hi I used the following code

    foreach (ListViewItem ltv in listView1.SelectedItems)
    {
    lb4.Text = ltv.Text;

    listView1.SelectedItems gets all the selected items from the listview.The first item that i select from the listview gets displayed in the lb4.I want the next selected item from the listview to get displayed in lb5.I believe that ltv contains the list of all selected items but i do not know how to add it to label.Can you tell me how to do this?

    K Offline
    K Offline
    King Julien
    wrote on last edited by
    #4

    I think you have posted wrongly to some other thread i believe....

    Have a Happy Coding.....

    M 1 Reply Last reply
    0
    • K King Julien

      I think you have posted wrongly to some other thread i believe....

      Have a Happy Coding.....

      M Offline
      M Offline
      mrithula8
      wrote on last edited by
      #5

      ya im sorry

      1 Reply Last reply
      0
      • M mrithula8

        Hi I used the following code

        foreach (ListViewItem ltv in listView1.SelectedItems)
        {
        lb4.Text = ltv.Text;

        listView1.SelectedItems gets all the selected items from the listview.The first item that i select from the listview gets displayed in the lb4.I want the next selected item from the listview to get displayed in lb5.I believe that ltv contains the list of all selected items but i do not know how to add it to label.Can you tell me how to do this?

        M Offline
        M Offline
        mrithula8
        wrote on last edited by
        #6

        Hi I have a TableLayoutPanel and i have added label controls to the each cell of its 1st column.Also i have used a listview control to display the list of all files from a directory.For a design purpose, i want the name of the file to be displayed in the 1st label in the 1st cell of the table when i select any file name from the listview control.Similarly when the 2nd item from listview is selected it should appear in the 2nd label. Currently i have a design which has a mapping like when i select on the 1st filename it appears in the 1st label,2nd file name in the 2nd label...the drawback that i face here is that suppose if by random i select 5th filename from listview it appears on the 5th label. I hope im making myself clear.Please help me with this

        1 Reply Last reply
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        • K King Julien

          mrithula8 wrote:

          ListView.SelectedListViewItemCollection sl = this.listView1.SelectedItems; lb4.Text = sl[0].Text;

          the above code itself will get you the list of selected items. If you want to assign each selected item to each label, then create a control array of label and iterate through a for loop like

          for(int i= 0; i < sl.Count; i++)
          {
          Labelarray[i].Text = sl[i].text;
          }

          Have a Happy Coding.....

          M Offline
          M Offline
          mrithula8
          wrote on last edited by
          #7

          Hi I used the following code.Whichever item i select from the listview appears on the 1st label.The item that is selected 2nd does not appear in the 2nd label.Im not clear what sl[1] will contain?Can you tell me the mistake?

          Label[] lb = new Label[4];
          lb[0] = lb4;
          lb[1] = lb5;
          lb[2] = lb6;
          lb[3] = lb7;
          for (int h = 0; h < sl.Count; h++)
          {
          lb[h].Text = sl[h].Text;
          }

          K 1 Reply Last reply
          0
          • M mrithula8

            Hi I used the following code.Whichever item i select from the listview appears on the 1st label.The item that is selected 2nd does not appear in the 2nd label.Im not clear what sl[1] will contain?Can you tell me the mistake?

            Label[] lb = new Label[4];
            lb[0] = lb4;
            lb[1] = lb5;
            lb[2] = lb6;
            lb[3] = lb7;
            for (int h = 0; h < sl.Count; h++)
            {
            lb[h].Text = sl[h].Text;
            }

            K Offline
            K Offline
            King Julien
            wrote on last edited by
            #8

            ofcourse.... the code is working according to what it was written. I assume that you are calling this code after you select the item from the listview. In that case, have a close look at the for loop. every time the for loop counter initializes to 0

            mrithula8 wrote:

            for (int h = 0; h < sl.Count; h++)

            it means that whatever you select, that will be assigned in order from the first label. Thats wat is happening.... If you want to display the listview item 1 in label 1, then you try getting the item number of the list view and use the same number as the index for the label control array and i think your problem could be solved.

            for (int h = 0; h < sl.Count; h++)
            {
            lb[sl[i].Index].Text = sl[i].Text;
            }

            Make sure that you have n number of labels if there are n number of items... otherwise it may throw you an exception....

            Have a Happy Coding.....

            M 1 Reply Last reply
            0
            • K King Julien

              ofcourse.... the code is working according to what it was written. I assume that you are calling this code after you select the item from the listview. In that case, have a close look at the for loop. every time the for loop counter initializes to 0

              mrithula8 wrote:

              for (int h = 0; h < sl.Count; h++)

              it means that whatever you select, that will be assigned in order from the first label. Thats wat is happening.... If you want to display the listview item 1 in label 1, then you try getting the item number of the list view and use the same number as the index for the label control array and i think your problem could be solved.

              for (int h = 0; h < sl.Count; h++)
              {
              lb[sl[i].Index].Text = sl[i].Text;
              }

              Make sure that you have n number of labels if there are n number of items... otherwise it may throw you an exception....

              Have a Happy Coding.....

              M Offline
              M Offline
              mrithula8
              wrote on last edited by
              #9

              Hi Thanks for reply.I do not want to display the 1st item in the 1st label.Suppose for the 1st time i select the 10th item that should appear in the 1st label.The 2nd time if i select the 5th item it should be displayed in the 2nd the label......Actually i uesd the code in the selected indexchanged event <pre> private void listView1_SelectedIndexChanged(object sender, EventArgs e) { ListView.SelectedListViewItemCollection sl = this.listView1.SelectedItems; Label[] lb = new Label[4]; lb[0] = lb4; lb[1] = lb5; lb[2] = lb6; lb[3] = lb7; for (int h = 0; h <= sl.Count; h++) { lb[h].Text = sl[h].Text; } }

              modified on Wednesday, April 8, 2009 2:18 AM

              K 1 Reply Last reply
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              • M mrithula8

                Hi Thanks for reply.I do not want to display the 1st item in the 1st label.Suppose for the 1st time i select the 10th item that should appear in the 1st label.The 2nd time if i select the 5th item it should be displayed in the 2nd the label......Actually i uesd the code in the selected indexchanged event <pre> private void listView1_SelectedIndexChanged(object sender, EventArgs e) { ListView.SelectedListViewItemCollection sl = this.listView1.SelectedItems; Label[] lb = new Label[4]; lb[0] = lb4; lb[1] = lb5; lb[2] = lb6; lb[3] = lb7; for (int h = 0; h <= sl.Count; h++) { lb[h].Text = sl[h].Text; } }

                modified on Wednesday, April 8, 2009 2:18 AM

                K Offline
                K Offline
                King Julien
                wrote on last edited by
                #10

                Oh!!! then use a wild way... declare a static int and use that as label index

                static int counter = 0;

                for (int h=0; h<sl.count;>{
                if (counter < lb.Length)
                {
                lb[counter].Text = sl[h].Text;
                counter++;
                }
                }

                Have a Happy Coding.....

                M 1 Reply Last reply
                0
                • K King Julien

                  Oh!!! then use a wild way... declare a static int and use that as label index

                  static int counter = 0;

                  for (int h=0; h<sl.count;>{
                  if (counter < lb.Length)
                  {
                  lb[counter].Text = sl[h].Text;
                  counter++;
                  }
                  }

                  Have a Happy Coding.....

                  M Offline
                  M Offline
                  mrithula8
                  wrote on last edited by
                  #11

                  Hi When i used this, it says invalid static modifier for this item.So i used <pre>static int counter=0</pre> outside the method but im not able to select any item from listview.

                  K 1 Reply Last reply
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                  • M mrithula8

                    Hi When i used this, it says invalid static modifier for this item.So i used <pre>static int counter=0</pre> outside the method but im not able to select any item from listview.

                    K Offline
                    K Offline
                    King Julien
                    wrote on last edited by
                    #12

                    Not sure how you have implemented it. i suggest declare the counter(static int counter = 0) not inside any methods. Just declare inside it inside the class. That would do... But how does this matter when selecting an item from the List View???? can you place the entire code block or atleast how you call this method after selecting the items.....???

                    Have a Happy Coding.....

                    M 1 Reply Last reply
                    0
                    • K King Julien

                      Not sure how you have implemented it. i suggest declare the counter(static int counter = 0) not inside any methods. Just declare inside it inside the class. That would do... But how does this matter when selecting an item from the List View???? can you place the entire code block or atleast how you call this method after selecting the items.....???

                      Have a Happy Coding.....

                      M Offline
                      M Offline
                      mrithula8
                      wrote on last edited by
                      #13

                      Hi, I used this code in the selectedIndexchanged().Is this right?I declared the conuter variable inside the class.When i execute the code the form does not respond. <pre>private void listView1_SelectedIndexChanged(object sender, EventArgs e) { ListView.SelectedListViewItemCollection sl = this.listView1.SelectedItems; Label[] lb = new Label[4]; lb[0] = lb4; lb[1] = lb5; lb[2] = lb6; lb[3] = lb7; for (int h = 0; h < sl.Count;){ if(counter<lb.Length) { lb[counter].Text=sl[h].Text; counter++; } } }

                      modified on Wednesday, April 8, 2009 5:18 AM

                      K 1 Reply Last reply
                      0
                      • M mrithula8

                        Hi, I used this code in the selectedIndexchanged().Is this right?I declared the conuter variable inside the class.When i execute the code the form does not respond. <pre>private void listView1_SelectedIndexChanged(object sender, EventArgs e) { ListView.SelectedListViewItemCollection sl = this.listView1.SelectedItems; Label[] lb = new Label[4]; lb[0] = lb4; lb[1] = lb5; lb[2] = lb6; lb[3] = lb7; for (int h = 0; h < sl.Count;){ if(counter<lb.Length) { lb[counter].Text=sl[h].Text; counter++; } } }

                        modified on Wednesday, April 8, 2009 5:18 AM

                        K Offline
                        K Offline
                        King Julien
                        wrote on last edited by
                        #14

                        Declare a label control array in the Form class like this

                        public Label[] lblArray = null;
                        static int counter = 0;

                        Inside the form load method add your labels like this.....

                        this.lblArray = new Label[] { label4, label5, label6 };

                        Then the event should look like this...

                        private void ListView1_SelectedIndexChanged_1(object sender, EventArgs e)
                        {
                        ListView.SelectedListViewItemCollection sl = ListView1.SelectedItems;

                                for (int h = 0; h < sl.Count; h++)
                                {
                                    if (counter < lblArray.Length)
                                    {
                                        lblArray\[counter\].Text = sl\[h\].Text;
                                        counter++;
                                    }
                                }
                            }
                        

                        I have even checked this myself... Its working for me... without any problem...

                        Have a Happy Coding.....

                        M 1 Reply Last reply
                        0
                        • K King Julien

                          Declare a label control array in the Form class like this

                          public Label[] lblArray = null;
                          static int counter = 0;

                          Inside the form load method add your labels like this.....

                          this.lblArray = new Label[] { label4, label5, label6 };

                          Then the event should look like this...

                          private void ListView1_SelectedIndexChanged_1(object sender, EventArgs e)
                          {
                          ListView.SelectedListViewItemCollection sl = ListView1.SelectedItems;

                                  for (int h = 0; h < sl.Count; h++)
                                  {
                                      if (counter < lblArray.Length)
                                      {
                                          lblArray\[counter\].Text = sl\[h\].Text;
                                          counter++;
                                      }
                                  }
                              }
                          

                          I have even checked this myself... Its working for me... without any problem...

                          Have a Happy Coding.....

                          M Offline
                          M Offline
                          mrithula8
                          wrote on last edited by
                          #15

                          Hi Thanks its working now

                          K 1 Reply Last reply
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                          • M mrithula8

                            Hi Thanks its working now

                            K Offline
                            K Offline
                            King Julien
                            wrote on last edited by
                            #16

                            unmaiyavae work aagutha... illa summa solringla...???? what did you do for decrementing the counter....?????

                            Have a Happy Coding.....

                            M 1 Reply Last reply
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                            • K King Julien

                              unmaiyavae work aagutha... illa summa solringla...???? what did you do for decrementing the counter....?????

                              Have a Happy Coding.....

                              M Offline
                              M Offline
                              mrithula8
                              wrote on last edited by
                              #17

                              Hi Its working the way i wanted.I dont understand why the counter should be decremented?

                              K 1 Reply Last reply
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                              • M mrithula8

                                Hi Its working the way i wanted.I dont understand why the counter should be decremented?

                                K Offline
                                K Offline
                                King Julien
                                wrote on last edited by
                                #18

                                I dont know exactly about your application.... So no comments,.... Anyway!! Cheers...

                                Have a Happy Coding.....

                                M 1 Reply Last reply
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                                • K King Julien

                                  I dont know exactly about your application.... So no comments,.... Anyway!! Cheers...

                                  Have a Happy Coding.....

                                  M Offline
                                  M Offline
                                  mrithula8
                                  wrote on last edited by
                                  #19

                                  hi I have another doubt.If i want to find the selected index of a listbox or a listview control i can use listbox.SelectedIndex; Similarly if i have 5 checkboxes and if i want to find the index of the checkbox that is checked how do i do this?There is no Selected Index property for checkbox. I have the exe files listed and each one is assigned a checkbox.I want to start only those exe files that i select.I am able to do this.After starting the exe files i want the client to send message to only those exe files that have been started. I used the following code to send message to different ports <pre>public void SendMessage() { try { label1.Text = "Enter the number of times to send the message:"; String ns = textBox1.Text; int c = Convert.ToInt32(ns); int[] a = new int[4]; XmlTextReader xtr1 = new XmlTextReader("p1.xml"); XmlTextReader xtr2 = new XmlTextReader("p2.xml"); XmlTextReader xtr3 = new XmlTextReader("p3.xml"); XmlTextReader xtr4 = new XmlTextReader("p4.xml"); int p1 = 0, p2 = 0, p3 = 0, p4 = 0; while (xtr1.Read()) { switch (xtr1.NodeType) { case XmlNodeType.Text: String rv = xtr1.Value; p1 = Convert.ToInt32(rv); break; } } while (xtr2.Read()) { switch (xtr2.NodeType) { case XmlNodeType.Text: String rv1 = xtr2.Value; p2 = Convert.ToInt32(rv1); break; } } while (xtr3.Read()) { switch (xtr3.NodeType) { case XmlNodeType.Text: String rv2 = xtr3.Value; p3 = Convert.ToInt32(rv2); break; } } while (xtr4.Read()) { switch (xtr4.NodeType) { case XmlNodeType.Text: String rv3 = xtr4.Value;

                                  K 1 Reply Last reply
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                                  • M mrithula8

                                    hi I have another doubt.If i want to find the selected index of a listbox or a listview control i can use listbox.SelectedIndex; Similarly if i have 5 checkboxes and if i want to find the index of the checkbox that is checked how do i do this?There is no Selected Index property for checkbox. I have the exe files listed and each one is assigned a checkbox.I want to start only those exe files that i select.I am able to do this.After starting the exe files i want the client to send message to only those exe files that have been started. I used the following code to send message to different ports <pre>public void SendMessage() { try { label1.Text = "Enter the number of times to send the message:"; String ns = textBox1.Text; int c = Convert.ToInt32(ns); int[] a = new int[4]; XmlTextReader xtr1 = new XmlTextReader("p1.xml"); XmlTextReader xtr2 = new XmlTextReader("p2.xml"); XmlTextReader xtr3 = new XmlTextReader("p3.xml"); XmlTextReader xtr4 = new XmlTextReader("p4.xml"); int p1 = 0, p2 = 0, p3 = 0, p4 = 0; while (xtr1.Read()) { switch (xtr1.NodeType) { case XmlNodeType.Text: String rv = xtr1.Value; p1 = Convert.ToInt32(rv); break; } } while (xtr2.Read()) { switch (xtr2.NodeType) { case XmlNodeType.Text: String rv1 = xtr2.Value; p2 = Convert.ToInt32(rv1); break; } } while (xtr3.Read()) { switch (xtr3.NodeType) { case XmlNodeType.Text: String rv2 = xtr3.Value; p3 = Convert.ToInt32(rv2); break; } } while (xtr4.Read()) { switch (xtr4.NodeType) { case XmlNodeType.Text: String rv3 = xtr4.Value;

                                    K Offline
                                    K Offline
                                    King Julien
                                    wrote on last edited by
                                    #20

                                    you can use the same slvi to get that. slvi[index].checked will give you the corresponding checkbox of an item is checked or not.....

                                    Have a Happy Coding.....

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