When I load images into ListView, the numbers appear below the images. How can I remove them?
The following is my code to load images into ListView:
DataTable dtPath = new DataTable();
dtPath = ContrPtMRD.SelectFilePaths(ObjPtMRH);
ImageList myImageList = new ImageList();
lvPtMedicalRecord.LargeImageList = myImageList;
int imageIndex = 0;
foreach (DataRow rows in dtPath.Rows)
{
myImageList.Images.Add(Image.FromFile(rows[2].ToString()));
ListViewItem lvi = new ListViewItem(new string[]{rows[0].ToString(),rows[1].ToString()});
lvi.ImageIndex = imageIndex;
imageIndex++;
lvPtMedicalRecord.Items.Add(lvi);
}
The ListView will not add any image numbers unless you explicitly add them. You are doing so in the following line:
ListViewItem lvi = new ListViewItem(new string[]{rows[0].ToString(),rows[1].ToString()});
and the number seem to be coming from
rows[0].ToString()
Which is the text property of the ListViewItem.
To remove the numbers, replace rows[0].ToString() with an empty string or use one of the ListViewItem's constructors that does not require you to provide the text property:
ListViewItem lvi = new ListViewItem();
Its not clear where are the numbers coming from but I think the numbers are in the first column of your DataTable. If you want to remove the numbers then dont add the first column values to your ListView as Items.
or else
Hide the column in the ListView which you dont want to show.
or else
Change the view of the ListView to large details.(this will not show the item value, only subItems will be visible)
Related
Background:
I have lists which store parsed data from sqlite columns. I want to show these lists in a listview to the user. They click a button and the list view should show these 3 lists and their contents.
The three lists are called, SeqIrregularities, MaxLen, and PercentPopList.
Problem: The listview is being populated in a horizontal manner (Shown below) which only contains contents of Seqirregularities list.The other 2 don't even show up. I want the listview to have contents of each list, vertically in the corresponding list column.
Side note: The listview is skipping the first column, another problem, but I can fix that.
Here's the code:
ListViewItem lvi = new ListViewItem();
foreach (object o in SeqIrregularities )
{
lvi.SubItems.Add(o.ToString());
}
foreach (object a in MaxLen )
{
lvi.SubItems.Add(a.ToString());
}
foreach (object b in PercentPopList)
{
lvi.SubItems.Add(b.ToString());
}
listView1.Items.Add(lvi);
If you are adding items to ListViewItem object and assigning it to ListView it will create a single row because ListViewItem represents one row in ListView. from your code you are adding ListViewItem only one time, hence you will get only one Row that is Horizontally.
if you need to get the Multiple Rows (Vertically) you need to add the multiple ListViewItem objects to ListView .
ListViewItem lvi = new ListViewItem();
foreach (object o in SeqIrregularities )
{
lvi.SubItems.Add(o.ToString());
}
listView1.Items.Add(lvi);//Adds a new row
lvi = new ListViewItem();
foreach (object a in MaxLen )
{
lvi.SubItems.Add(a.ToString());
}
listView1.Items.Add(lvi);//Adds a new row
lvi = new ListViewItem();
foreach (object b in PercentPopList)
{
lvi.SubItems.Add(b.ToString());
}
listView1.Items.Add(lvi);//Adds a new row
Hello,
I have 3 Text Boxes and need their text to be inserted into a ListView by their matching columns when a button click event occurs. I tried this:
ListViewItem lvi = new ListViewItem();
lvi.SubItems.Add(textBox3.Text);
lvi.SubItems.Add(textBox4.Text);
lvi.SubItems.Add(textBox5.Text);
Although it doesn't seem to do it. Any suggestions?
You'l have to create a ListViewItem, and then you'l have to add it to your list. For example:
ListViewItem item1 = new ListViewItem();
item1.Content = textBox1.Text;
yourListName.Items.Add(item1); //Or SubItems
Good luck!
With this code I add values in my columns. But the first column is constantly skipped.
This is the code I use:
foreach (Muziek m in lijstMuziek)
{
ListViewItem lvi = new ListViewItem();
lvi.SubItems.Add(m.Rapper);
lvi.SubItems.Add(m.Titel);
lvi.SubItems.Add(m.DuurMinuut.ToString());
listView1.Items.Add(lvi);
}
I changed the displayindex, but that doesn't matter.
Anyone got a clue why this could happen?
The first item's text goes in ListViewItem.Text. The subitems are for subsequent columns.
I am using ListView's large icon view, to view database inserts with image per insert.
When a new insert is made, I clear the whole ListView and add all inserts using the following code. It works perfectly, only when run for the first time.
The second time (after a new insert is added), I get all the items, but with missing images (some of them are missing and some of them are scrambled)
private void updateListView()
{
myListView.Clear();
myListView.Items.Clear();
myConnection.connect();
List<String> myValues = myConnection.getMyValues();
List<String> myImages = myConnection.getMyImages();
ImageList myImageList = new ImageList();
myImageList.ImageSize = new Size(256, 256);
myImageList.ColorDepth = ColorDepth.Depth32Bit;
for (int i = 0; i < myValues.Count; i++)
{
myListView.Items.Add(myValues[i]);
myListView.Items[i].ImageIndex = i;
myImageList.Images.Add(Image.FromFile(myImages[i]));
}
myListView.LargeImageList = myImageList;
myConnection.close();
myListView.Refresh();
}
I've checked with debug and the values/filepaths are correct.
Try associating the myListView first before you add the new item:
myListView.LargeImageList = myImageList; ,
then add item...
myImageList.Images.Add(Image.FromFile(myImages[i]));
also what is churchListView..??? where are you declaring it.. if so replace the code example to fit the churchListView or the appropriate ListView variable...
I found it:
The problem was that I had the Sort property of the ListView on.
This means that the ListView sorted it's Items automatically.
So in these lines:
myListView.Items.Add(myValues[i]);
myListView.Items[i].ImageIndex = i;
An item is added and after that the last item (i) is attached to the last image (i)
In between these lines the newly added item is auto-sorted alphabetically, so it isn't
indexed at i anymore, but something else. So the image is assigned to a random item.
Instead I did this:
ListViewItem lastAddedListViewItem = myListView.Items.Add(myValues[i]);
lastAddedListViewItem.ImageIndex = i;
And it worked
I want to display tag and subitem in my listview , those items come by using while statement. here the code
int id = 0;
while ((line = sr.ReadLine()) != null)
{
id++;
string[] columns = line.Split(',');
ListViewItem item = new ListViewItem();
item.Tag = id;
item.SubItems.Add(columns[1]);
lv_Transactions.Items.Add(item);
}
subitems cab be displayed but the tag just appear blanks. Someone know to fix this please help me
To make the item have text, which I assume you want to show the 'id', you will want this:
item.Text = id.ToString();
The tag field is ignored by the control, and exists as a way of 'tagging' the source data to a control, so it can be retrieved later on (for example, when processing an event that was trigged by the control).
The Tag property is not displayable. You will need to add the contents of the tag as a subitem or otherwise embed it in the data you are showing to the user.
You have three choices on how to implement this:
1) ListViewItem item = new ListViewItem(id.ToString());
2) item.Text = id.ToString(); (this is effectively the same as 1)
3) item.SubItems(id.ToString()); if you want the id to appear in the list of subitems.
Update
SubItems will only work correctly if you have defined Columns in the ListView and have set the ListView's View to View.Details.
Assuming that you have not done this, the following line:
item.SubItems.Add(columns[1]);
should be modified to be:
item.Text = columns[1];