With normal winform controls I would do something like this:
ListView.SelectedListViewItemCollection col = listView1.SelectedItems;
foreach (ListViewItem item in col)
{
label8.Text = item.SubItems[1].Text;
label9.Text = item.SubItems[3].Text;
}
but I cant seem to create the samething with telerik radlistview, any ideas?
You should be able to do something similar with radlistview. The class you need to use is Telerik.WinControls.UI.ListViewDataItem.
Telerik.WinControls.UI.ListViewSelectedItemCollection col = listView1.SelectedItems
foreach (ListViewDataItem item in col)
{
label8.Text = item[1].ToString();
label9.Text = item[3].ToString();
}
I'm not sure if the ToString() is necessary. I tried it without the ToString(), and it worked fine for me, but my objects are strings.
Following Telerik Documentation
You can choose one of three methods to get or set values in subitems of RadListView:
- by using the column index
- by using the column name
- by using a column reference
Examples:
item[0] = "CellValue1";
item["Column2"] = "CellValue2";
item[radListView1.Columns[2]] = "CellValue3";
Related
I'm using gridview devexpress. After i use filter on that component, there is error nullreference. If i don't using filter. There isn't error on my code.
for (int i = 0; i < GridView1.RowCount; i++)
{
DataRow dr;
dr = GridView1.GetDataRow(GridView1.GetDataSourceRowIndex(i));
MessageBox.Show(dr[0].ToString());
}
That is my code. Any solution to get datarow value from gridview after filter?
Maybe the problem is that you are using RowCount. The DataSourceRowIndex is based on the index your underlying datasource holds. Thats not the same. If you are grouping or sorting the rowhandle of gridview is changing. And the RowCount only shows you how much rows are in the GridView. But this must not be equivalent to your datasourceindex.
try the following to get your datarow:
1.
foreach (DataRow row in ((DataTable)GridControl1.DataSource).Rows)
{
//Here you can access your row via row variable
}
You have to know that the RowCount Property cant be used for accessing rows safely!
If you need further help dont hesitate for asking.
You must use BaseView.DataRowCount property instead of BaseView.RowCount property:
for (int i = 0; i < GridView1.DataRowCount; i++)
{
DataRow dr;
dr = GridView1.GetDataRow(GridView1.GetDataSourceRowIndex(i));
MessageBox.Show(dr[i].ToString());
}
I am programmatically updating my WinForm DataGridView
Problem, DataGridViewCheckBoxCell doesn't get updated !!!
I was google, it seams like knowing case but whatever I've tried did not help yet.
private void InitializeFunctionsDataGrid()
{
System.Data.DataSet ds = func.GetFunctions();
this.FunctionsDataGrid.DataSource = ds.Tables[0];
this.FunctionsDataGrid.Columns["FunctionId"].Visible = false;
this.FunctionsDataGrid.Columns["DESCRIPTION"].Width = 370;
DataGridViewCheckBoxColumn column = new DataGridViewCheckBoxColumn();
column.Name = "enable";
column.HeaderText = "enable";
column.FalseValue = 0;
column.TrueValue = 1;
FunctionsDataGrid.Columns.Add(column);
foreach(DataGridViewRow row in FunctionsDataGrid.Rows)
{
(( DataGridViewCheckBoxCell)row.Cells["enable"]).Value = 1;
}
FunctionsDataGrid.CurrentCell = null;
}
enable is an unbound column. This means that you need to provide cell value yourself.
You can set the VirtualMode property to true and handle the CellValueNeeded event.
If you want to enable the user to check a cell then you need to handle the CellValuePushed event.
DataGridView samples that are part of the DataGridView FAQ has a specific example of an unbound checkbox column along with databound columns.
OK basically easiest way for me was to work with datasource.
I've add the column to the DataTable and fill it with data.
And then last thing this.FunctionsDataGrid.DataSource = ds.Tables[0];
I have 10 comboBox in a groupBox
for I just want to display a calculated value in respective comboBox like this say if I set a varible double i=08.00; then on button click cmboBox should display values like this
CB1-08.00
CB2-09.50
CB3-10.00
CB4-10.50
CB5-11.00
CB6-11.50
.... and so on upto CB10 But I am getting output like this
And Code
private void button1_Click(object sender, EventArgs e)
{
double i=08.00;
foreach (var comboBox in groupBox1.Controls.OfType<ComboBox>())
{
comboBox.Text = i.ToString("00.00");
i = i + 0.5;
}
}
Your combobox order is different in the collection so it inserts the numbers randomly. May be you can name your combobox for instance like cmb1,cmb2,cmb3 etc. and if you update your code it will run.
Your controls in the Controls collection are not sorted by their appearance on the form. You will need to find a way to sort them if you need different values in each based on their position.
Foreach loop doesn't give the collection in the order you wanted. The way to go forward is to give a tag id to each combo box, then you can use that to assign a value to them them.
So your first combo box will start with tag id 0, and the last one will have 8,
double val = 08.00;
for (int i = 0; i < groupBox1.Controls.Count; ++i)
{
var combobox = groupBox1.Controls[i] as ComboBox;
int tag = int.Parse(combobox.Tag.ToString());
double value = val + (0.5 * tag);
combobox.Text = value.ToString("00.00");
}
Make sure you tag the cobbo box in the order you wanted them.
I have a DataTable that is coming from a Web Service, which I need to bind to a ComboBox. I have not grokked doing binding in XAML yet so this question is about binding in code instead. So far I have tried
cboManager.DataContext = Slurp.DistrictManagerSelect().DefaultView;
cboManager.DisplayMemberPath = "Name";
cboManager.SelectedValuePath = "NameListId";
cboManager.SetBinding(ComboBox.ItemsSourceProperty, new Binding());
And I have tried
DataTable tbl = new DataTable();
tbl = Slurp.DistrictManagerSelect();
cboManager.ItemsSource = ((IListSource)tbl).GetList();
cboManager.DisplayMemberPath = "[Name]";
cboManager.SelectedValuePath = "[NameListId]";
DataContext = this;
In both cases I get the list of managers to show but when I select from the ComboBox I get [Name] and [NameListId] and not the values I am expecting. What am I doing wrong (other than not using XAML's DataBinding)?
Edit added after answers to my original post came in.
So (based on Rachel's response) try number three looks like this:
using (DataTable tbl = Slurp.DistrictManagerSelect())
{
List<ManagerList> list = new List<ManagerList>();
foreach (var row in tbl.Rows)
{
list.Add(new ManagerList
{
NameListId = (int)row[0],
Name = row[1].ToString()
});
}
}
Assuming I am doing what she meant the correct way I am no getting this error Cannot apply indexing with [] to an expression of type 'object'
Have you tried to just bind to the DataTable directly? Do you have columns Name and NameListId? Leave off the DataContext (you already assigned the ItemsSource).
DataTable tbl = Slurp.DistrictManagerSelect();
cboManager.ItemsSource = tbl;
cboManager.DisplayMemberPath = "Name";
cboManager.SelectedValuePath = "NameListId";
When you cast to the IListSource I suspect it is combining all the columns. If you want to bind to a list then you need to create items that have properties Name and NameListID.
I think that's because your ItemsSource is a DataTable, so each ComboBoxItem contains a DataContext of a DataRow, and the DataRow class doesn't have properties called Name or NameListId
Basically, you're trying to tell the ComboBox to display DataRow.Name, and set the value to DataRow.NameListId, both of which are not valid properties.
I usually prefer to parse data into objects, and bind the ItemsSource a List<MyObject> or ObservableCollection<MyObject>
foreach(DataRow row in tbl.Rows)
list.Add(new MyObject { Name = row[0].ToString(), NameListId = (int)row[1] });
cboManager.ItemsSource = list;
I've got my objects in PagedCollectionView bound to DataGrid and DataPager.
var pcView = new PagedCollectionView(ObservableCollection<Message>(messages));
How can I easily get items from current page in PagedCollectionView from my ViewModel? I wish there were something like this:
var messagesFromCurrentPage = pcView.CurrentPageItems; // error: no such a property
There are properties like SourceCollection, PageIndex and Count but I don't find them useful in this case. What am I missing here?
If you want to get select items you can just use Linq to do it.
var items = pcView.Where(i => i.SomeCondition == true);
Make sure you add a using statement for System.Linq.
Edit: Whenever I have a question as to what is really going on I just look at the code using Reflector (or ILSpy). In this case here is the relevant code inside GetEnumerator() which is how the Select or Where gets the items in the list:
List<object> list = new List<object>();
if (this.PageIndex < 0)
{
return list.GetEnumerator();
}
for (int i = this._pageSize * this.PageIndex; i < Math.Min(this._pageSize * (this.PageIndex + 1), this.InternalList.Count); i++)
{
list.Add(this.InternalList[i]);
}
return new NewItemAwareEnumerator(this, list.GetEnumerator(), this.CurrentAddItem);
So you can see how it is returning only the items in the current page from this code.