I'm a beginner in C# and I am trying to create a simple view, where I have data listed into two separate columns in a ListView. I have created the columns, and added subItems to two different ListViewItems. However, when compiling only the main item shows up, an no SubItems are present.
listView1.Columns.Add("Client Code");
listView1.Columns.Add("Client Name");
ListViewItem item = new ListViewItem("Client Code");
ListViewItem item2 = new ListViewItem("Client Name");
listView1.Items.AddRange(new ListViewItem[] {item, item2});
foreach(string clientCode in clientCodes)
//clientCode is a list of Strings initialized earlier in the code
{
listView1.Items[0].SubItems.Add(code);
}
I have also tried the following, with no success:
ListViewItem item = new ListViewItem("Client Code");
ListViewItem item2 = new ListViewItem("Client Name");
foreach(string clientCode in clientCodes)
//clientCode is a list of Strings initialized earlier in the code
{
item.SubItems.Add(code);
}
listView1.Items.AddRange(new ListViewItem[] {item, item2});
Simply adding
item.SubItems.Add("test");
or
listView1.Items[0].SubItems.Add("test");
also has no effect.
The output of the code above is two columns, one with "Client Code" and one with "Client Name" but no additional data.
What am I doing wrong, why isn't any of the data showing up in the columns?
Any help is greatly appreciated. Thank you.
We need to set the View property of ListView as View.Details before adding items to display the items as shown below.
listView1.View = View.Details;
listView1.Columns.Add("Client Code");
listView1.Columns.Add("Client Name");
Related
I tried using this code to add items on ListView but clearly I only add one column on each rows although I have 10 columns. Here's my code:
ListView1.Items.Add(firstname.Text)
ListView1.Items.Add(middlename.Text)
ListView1.Items.Add(lastname.Text)
ListView1.Items.Add(gender.Text)
ListView1.Items.Add(age.Text)
ListView1.Items.Add(address.Text)
ListView1.Items.Add(lrnNumber.Text)
ListView1.Items.Add(formerschool.Text)
ListView1.Items.Add(strandcourse.Text)
ListView1.Items.Add(contact.Text)
ListView1.Items.Add(birthdate.Text)
You should create the object ListViewItem at first:
ListViewItem item = new ListViewItem(new []{"1","2","3","4"});
listView1.Items.Add(item);
My Listview show nothing after adding Items from a List into it. Why?
My List is not empty And my program goes into this loop.
So Is the code wrong for adding items into an listview? Because I saw many chatrooms and also from Microsoft that I can add them like this.
I tried it also with this code:listView1.Items.Add(new ListViewItem { ImageKey = "Person", Text = database1[counter1].name });
Here a picture of my imglist, and the list is chosen at thelistview:
enter image description here
You can't add items if there are no columns, or you can but they wont show up.
Have you added some columns to your listView?
//Adds needed columns
this.listView1.Columns.Add("<column_name>", 50);
If you have one column, you can simply add items by:
ListViewItem itm = new ListViewItem("my_item");
listView1.Items.Add(itm);
If you have multiple columns instead of a string, you can do the same but with a string array where the array size equals to the number of columns.
string[] items = new string[listView1.Columns.Count];
Try this in your code too, in my code only works with this:
this.listView1.View = View.Details;
I know how to add/delete items but I don't know how to add more items to the same field (same row and same column). I want whenever I click a button, an item is added to same selected row but not to new row in the listView.
I uploaded a photo you can check to see what I exactly mean.
Consider looking at ObjectListView or DataGridView instead of what you are currently. It may be more flexible to your needs.
Your question is somewhat unclear. Clearly you are using listView and you have columns and rows resulting in a cell / box / grid location. I gather that, after its initial creation, you wish to append or alter the data at that location.
To get to the point: Multi-line text within a given 'cell' is not supported (as best I can tell). The picture you have shown is likely a custom object or something similar to a listView, but different (such as a ObjectListView). Or perhaps a picture.
listView2.Items[0].SubItems[4].Text = "123\nabc"; //Doesn't add a proper newline like a normal string
listView2.Items[0].SubItems[4].Text = "123\rabc"; //Doesn't add a proper return carriage like a normal string
listView2.Items[0].SubItems[4].Text = "123\r\nabc"; //Doesn't add a proper newline like a normal string
I am assuming you are using the details view
listView1.View = View.Details;
First adding your headers, listView1.Columns.Add(text, width);
listView1.Columns.Add(First Name", 50);
listView1.Columns.Add("Middle Name", 100);
listView1.Columns.Add("Last Name", 100);
You then add data to the listView. However, this is not done directly. You build a listViewITEM then add that item to the list view.
string[] row = new string[3];
row[0] = "john";
row[1] = "someone";
row[2] = "doe";
ListViewItem lvi = new ListViewItem(row);
listView1.Items.Add(item);
listView1.SelectedItems[#].SubItems[#].Text = "string" + "\n" + "string2";
CrazyPaste suggested adding a row, which could be practical and is something you often see with listViews.
However, If you choose to add or "redo" the rows, be sure to remove any old information before inputting new information to avoid duplicates.
Taken from the popup within visual studio 2013 pro
listView1.Items.RemoveAt(int index)
listView1.Items.Insert(int index, string key, string text, int imageIndex)
OR
listView1.Items.Clear(); //Clears all items
then
//Add populate logic here
Two arrays or a multidimensional array in a loop would be effective if you wish to populate the listview in that manner.
To achieve this programmatically, you could...
listView2 = new ListView();
listView2.View = View.Details;
listView2.Location = new Point(50, 50);
listView2.Size = new Size(400, 100);
this.Controls.Add(listView2);
listView2.Columns.Add("AAA");
listView2.Columns.Add("BBB");
listView2.Columns.Add("CCC");
listView2.Columns.Add("DDD");
listView2.Columns.Add("EEE");
ListViewItem item1 = new ListViewItem();
item1.Text = "0"; //The way to properly set the first piece of a data in a row is with .Text
item1.SubItems.Add("1"); //all other row items are then done with .SubItems
item1.SubItems.Add("2");
item1.SubItems.Add("3");
item1.SubItems.Add("");
item1.SubItems.Add("");
ListViewItem item2 = new ListViewItem();
item2.Text = "00";
item2.SubItems.Add("11");
item2.SubItems.Add("22");
item2.SubItems.Add("33");
item2.SubItems.Add("");
item2.SubItems.Add("");
ListViewItem item3 = new ListViewItem();
item3.Text = "000";
item3.SubItems.Add("111");
item3.SubItems.Add("222");
item3.SubItems.Add("333");
item3.SubItems.Add("");
item3.SubItems.Add("");
//item1.SubItems.Clear();
//item1.SubItems.RemoveAt(1);
listView2.Items.Add(item1);
listView2.Items.Add(item2);
listView2.Items.Add(item3);
//listView2.Items.Insert(2, item1); //0 here is the row. Increasing the number, changes which row you are writing data across
listView2.Items[0].SubItems[4].Text = "123\rabc";
To 'update' the information:
listView1.Items.Clear();
listView1.Items.Add(item1);
listView1.Items.Add(item2);
...etc
NOTES:
I was not able to get .Insert to work with subitems.
If you already inserted a listViewItem, You cannot insert an item
without first removing it
SubItems are not automatically created to fill empty space. Commands like 'listView2.Items[0].SubItems[4].Text' will not work with null/non-existent SubItems
I don't have much to go on. But this adds a new row:
string[] row = { "1", "snack", "2.50" };
var listViewItem = new ListViewItem(row);
listView1.Items.Add(listViewItem);
Here's a post discussing how to update an existing listitem:
C#: How do you edit items and subitems in a listview?
Ok. after I searched the internet for ages, it turned out that listView does not support text wrap. so instead I used DataGridView. thank you for your help
Like on the pic, there is second column header and two subheaders under it ?
For a complete example look at this link this should give you a full working example of what you can do
Add ListView Column and Insert Listview Items
try something like this
The order in which you add values to the array dictates the column they appear under so think of your sub item headings as [0],1 etc.
Here's a code sample:
//In this example an array of three items is added to a three column listview
string[] saLvwItem = new string[2];
foreach (string wholeitem in listofitems)
{
saLvwItem[0] = "Status Message";
saLvwItem[1] = wholeitem;
ListViewItem lvi = new ListViewItem(saLvwItem);
lvwMyListView.Items.Add(lvi);
}
To add SubItems you could also do something like this
lvwMyListView.Items[0].SubItems.Add("John Smith");
I am trying to add items to a listView that has 2 columns. When I use the code below it will add an item to the first column and nothing to the second then it will create a new line with nothing in the first one and an item in the second, how do I get them both on the same line? Thanks.
listView1.Items.Add(item1);
ListViewItem date = new ListViewItem();
date.SubItems.Add(subitem1);
listView1.Items.Add(date);
This works:
ListViewItem item = new ListViewItem("some item");
item.SubItems.Add(new ListViewItem.ListViewSubItem(item, "sub item"));
this.listView1.Items.Add(item);
Set View property to the Details to check that everything right.
That's because you are adding two ListViewItems to the ListView. Make it look similar to this:
var item = new ListViewItem("first");
item.SubItems.Add("second");
item.SubItems.Add("third");
listView1.Items.Add(item);