I have two 'ListPicker' controls. How could I make it so that after user changes 'SelectedValue' property of one of these controls a corresponding property of a second control would also change?
Can someone please provide us a example?
Thanks a lot
you can set select item like this code.when you fill list at the time you can set selected item property.
private void FillAssetType(int assetTypeID)
{
List<TbAssetType> lst = Asset.GetAssetType();
TbAssetType tb = new TbAssetType { AssetTypeName = "Select Asset Type" };
lst.Insert(0, tb);
lstpickAssetType.ItemsSource = lst;
lstpickAssetType.SelectedItem = lst.Where(p => p.AssetTypeID == assetTypeID).FirstOrDefault();
}
Related
I have implemented group observable collection like below.
Grouped Property
private ObservableCollection<Grouping<String, Request>> _groupedList = null;
public ObservableCollection<Grouping<String, Request>> GroupedList {
get {
return _groupedList;
}
set {
_groupedList = value;
RaisePropertyChanged(() => GroupedList);
}
}
Creating List
var list = new List<Request>();
var grouped = from Model in list
group Model by Model.Done into Group
select new Grouping<string, Request>(Group.Key, Group);
GroupedList = new ObservableCollection<Grouping<string, TModel>>(grouped);
Now i need to update one item in the list without reloading full list for performance.
i did tried like this , mylist.FirstOrDefault(i => i.Id== mymodel.Id); Not worked for me.
I need to pick that particular item and edit and update into the list again using linq or something but i stuck here for group observable collection no efficient details to do this., anybody having idea about this help please.
And finally i get updated single item, but i need to do that without
GroupedList = new ObservableCollection<Grouping<string, TModel>>(grouped);
Because everytime it create new list and bind into my view.Thats again big performance though.
Thanks in advance.
What I understand from your question is that you want to push an updated group without overwriting the entire ObservableCollection.
To do that:
var targetGroup = GroupedList.FirstOrDefault(i => i.Id == mymodel.Id);
var targetIndex = GroupedList.IndexOf(targetGroup);
var modifiedGroup = ... //Do whatever you want to do
GroupedList[targetIndex] = modifiedGroup;
This will trigger a 'replace' operation of the target grouping.
I have a use case where I have created a view object that contains 3 values namely LOC_CODE, LOC_DESC, CITY_DESC. Now in my ADF form I would like to display all 3 values in such a way so that user would have a provision to select LOC_CODE From Popup(LOV) and rest two fileds LOC_DESC & CITY_DESC should be changed accordingly. Currently the popup shows all 3 values but when I select the row and click on OK button it only fills the LOC_CODE in 1 textbox.
Below is the scenario of the same:
Got the solution. Just need to add a textbox or drag and drop near respective field and bind it with required binding object. For e.g. in this case LOC_DESC & CITY_DESC is available in my data control as DefLoc & DefCity that contains SQL to fetch respective description value. Now I need to drag and drop DefLoc & DefCity and binding is automatically done or just check binding in value.
you have to add valuechangelistener to location code. set autosubmit true.
now in backing bean use following code:
public void valuechangelistener(ValueChangeEvent valueChangeEvent) {
valueChangeEvent.getComponent().processUpdates(FacesContext.getCurrentInstance());
BindingContext bctx = BindingContext.getCurrent();
BindingContainer bindings = bctx.getCurrentBindingsEntry();
JUCtrlListBinding list = (JUCtrlListBinding)bindings.get("LOC_CODE");
String selectedValue = (String)list.getAttributeValue();
list.getListIterBinding().setCurrentRowWithKeyValue(selectedValue);
Row currRow = list.getListIterBinding().getCurrentRow();
if (currRow != null) {
bndloc_desc.setValue(currRow.getAttribute("LOC_DESC"));
bndcity_desc.setValue(currRow.getAttribute("CITY_DESC"));
}
}
now set partial trigger to both location desc and city desc with id of LOC_CODE.
After doing this you will get your desired result.
update after implementing it.
In my case JDeveloper 12.2.1.3.0
public void valueChangeListener(ValueChangeEvent valueChangeEvent) {
BindingContext bctx = BindingContext.getCurrent();
BindingContainer bindings = bctx.getCurrentBindingsEntry();
JUCtrlListBinding list = (JUCtrlListBinding) bindings.get("YourBindingforLOV");
String selectedValue = (String) valueChangeEvent.getNewValue();
list.getListIterBinding().setCurrentRowWithKeyValue(selectedValue);
Row currRow = list.getListIterBinding().getCurrentRow();
if (currRow != null) {
String s = (String) currRow.getAttribute("YourAttributeName");
}
}
I want to programmatically access the Fields collection in the ObjectDataSource object of my Telerik report.
I did notice in the design portion of the Telerik report you can access the fields collection
in the Value by using the Edit Expression window.
Example:
= Fields.MyFieldName
How would I accomplish this task using C# code in the report code behind file?
I had the same problem. This is how I solved it, although I believe there should be an easier way.
First I created a method for the details section itemdatabinding:
private void detail_ItemDataBinding(object sender, EventArgs e)
{
Telerik.Reporting.Processing.DetailSection section = (sender as Telerik.Reporting.Processing.DetailSection);
object id = section.DataObject["Data Field You want to access"];
Variable Name = id.ToString();
}
You can now use that variable anywhere in your codebehind.
Note: The Data Field must appear in your detail section. In my case I did not need it to show, so I just made 'Visible=false'.
This worked for me.
Bind Data to your own data to your variables
string ItemCode = "a";
string ItemDesc = "aa"
Then bind it to the data source
var Output = new
{
ItemCode = a.ItemCode,
ItemDesc = a.ItemDesc,
};
this.DataSource = Output;
All these are in code behind. Then move to design portion and modify your text-box as shown below.
= Fields.ItemCode
= Fields.ItemDesc
As part of an EvenReceiver the itemAdded on a custom List (source) creates a Calendar entry in another List (target).
I now want to add an itemUpdated event so that when the the source List is updated the change is filtered through to the target List.
I am using c# in Visual Studio to develop the Event Receiver.
Can anyone please advise the best way to do this and how I create the link between the two Lists to ensure I can update from source to target?
Thank you.
You will have to udpate the target list yourself...
var sourceItem = this.properties.ListItem;
//you can use other properties to search for the item in the targetlist aswell
string query = string.Format("<Where><Eq><FieldRef Name='Title' /><Value Type='Text'>{0}</Value></Eq></Where>", sourceItem.Title);
var spQuery = new SPQuery() { Query = query };
var foundItems = targetList.GetItems(spQuery);
if(foundItems.Count == 1)
{
var foundItem = foundItems[0];
//update the properties you want
foundItem["Property1"] = sourceItem["Property1"];
foundItem["Property2"] = sourceItem["Property2"];
foundItem["Property3"] = sourceItem["Property3"];
foundItem.Update();
}
Note that this piece of code is straight out of my head & untested ;-)
<dx:ASPxGridView ID="ASPxGridView1" runat="server" AutoGenerateColumns="False"
KeyFieldName="CategoryID">
<SettingsEditing Mode="Inline" />
<Columns>
<dx:GridViewCommandColumn VisibleIndex="0">
<EditButton Visible="True"></EditButton>
<NewButton Visible="True"></NewButton>
<DeleteButton Visible="True"></DeleteButton>
</dx:GridViewCommandColumn>
<dx:GridViewDataTextColumn Caption="CategoryID" FieldName="CategoryID"
VisibleIndex="1">
</dx:GridViewDataTextColumn>
<dx:GridViewDataTextColumn Caption="CategoryName" FieldName="CategoryName"
VisibleIndex="2">
</dx:GridViewDataTextColumn>
<dx:GridViewDataTextColumn Caption="Description" FieldName="Description"
VisibleIndex="3">
</dx:GridViewDataTextColumn>
</Columns>
</dx:ASPxGridView>
C# syntax:
NorthwindDataContext db = new NorthwindDataContext();
var lresult = (db.Categories
.Select(p => new { p.CategoryID, p.CategoryName, p.Description}));
ASPxGridView1.DataSource = lresult;
ASPxGridView1.DataBind();
If you run the code, you get a gridview which is filled by NorthWind Categories table. If you click on command button of grid whose are on left side, you get insert/update field, but you have not access to give input. They are gone to read only mode.
If I replace the above C# syntax with below
NorthwindDataContext db = new NorthwindDataContext();
var lresult = (db.Categories);
ASPxGridView1.DataSource = lresult;
ASPxGridView1.DataBind();
then it works fine. Now you can work with command button with out facing any problem.
I want to know what the problem is, why the first syntax does not work. Maybe you say
Anonymous types are class types that consist of one or more public read-only properties. But when you need to join more than one table and need to select several fields not all than what you do. Hope you not say linq is fail to do that or Don't think it is possible. Hope there must be any technique or else something to bind control with Anonymous type. Plz show some syntax .
The problem is that the result set is collection of Anonymous type as you supposed and the grid doesn't know how to treat it. What you have to do is to use RowInserting and RowUpdating events of the grid.
Here is an example of how I use DevExpress grid with NHibernate:
protected void gridAgentGroups_RowInserting(object sender, DevExpress.Web.Data.ASPxDataInsertingEventArgs e)
{
ASPxGridView currentGrid = sender as ASPxGridView;
var currentAgentGroup = new AgentGroup();
if (e.NewValues.Contains("Name"))
{
var newValue = (string)e.NewValues["Name"];
currentAgentGroup.Name = newValue;
}
if (e.NewValues.Contains("PhysicalAddress"))
{
var newValue = (string)e.NewValues["PhysicalAddress"];
currentAgentGroup.PhysicalAddress = newValue;
}
AgentGroupsDataAccess.SaveAgentGroup(currentAgentGroup);
e.Cancel = true;
currentGrid.CancelEdit();
currentGrid.DataBind();
}
protected void gridAgentGroups_RowUpdating(object sender, DevExpress.Web.Data.ASPxDataUpdatingEventArgs e)
{
ASPxGridView currentGrid = sender as ASPxGridView;
int currentAgentGroupId = (int)((AgentGroup)currentGrid.GetRow(currentGrid.EditingRowVisibleIndex)).Id;
var currentAgentGroup = AgentGroups.Where(ag => ag.Id == currentAgentGroupId).FirstOrDefault();
if (e.NewValues.Contains("Name"))
{
var newValue = (string)e.NewValues["Name"];
currentAgentGroup.Name = newValue;
}
if (e.NewValues.Contains("PhysicalAddress"))
{
var newValue = (string)e.NewValues["PhysicalAddress"];
currentAgentGroup.PhysicalAddress = newValue;
}
AgentGroupsDataAccess.SaveAgentGroup(currentAgentGroup);
e.Cancel = true;
currentGrid.CancelEdit();
currentGrid.DataBind();
}
I hope this will help.
Just a wild guess - you're binding your data to the grid using field names - yet, your anonymous type doesn't really have any field names.
Does it make any difference if you try this code:
NorthwindDataContext db = new NorthwindDataContext();
var lresult = (db.Categories
.Select(p => new { CategoryID = p.CategoryID,
CategoryName = p.CategoryName,
Description = p.Description}));
ASPxGridView1.DataSource = lresult;
ASPxGridView1.DataBind();
Again - I don't have the means to test this right now, it's just a gut feeling..... try it - does that help at all??
You actually can bind with anonymous type as you see the already filled rows. But: the grid itself cannot know how you build the query and what to add additionally to the visible columns (if there are valid default values).
As you use Developer Express' grid you have the option to provide your own update / edit form and handle everything needed on your own.