I want to force the parameter "Contract" to be returned whether the user selects it from the drop-down list or not.
You should be able to use the NeedDataSource event for that. Take a look at the documentation for it here: https://docs.telerik.com/reporting/designing-reports-parameters-programmatic-control
Specifically pay attention to this code sample:
private void Report1_NeedDataSource(object sender, System.EventArgs e)
{
//Take the Telerik.Reporting.Processing.Report instance
Telerik.Reporting.Processing.Report report = (Telerik.Reporting.Processing.Report)sender;
// Transfer the value of the processing instance of ReportParameter
// to the parameter value of the sqlDataSource component
// THIS IS WHERE YOU CAN FIND YOUR PARAMETER AND MODIFY ITS VALUE
this.sqlDataSource1.Parameters[0].Value = report.Parameters["ManagerID"].Value;
// Set the SqlDataSource component as it's DataSource
report.DataSource = this.sqlDataSource1;
}
Since your parameter is multi-value you will need to create an IEnumerable. Then you can add the values of the parameter that the user selected to the IEnumerable. Then check to see if the user selected "Contract", and if not then add it to the list. Finally add the IEnumerable to the data source's parameter's value property.
Related
I am trying to access the variable RowCount. However, I can't do :
since its assign value as 0 to row count even if have a result set
var rowCount=this.Variables.RowCount;
Where are you trying to access this variable, and are you trying to update it? SSIS variables can only be written to in the PostExecute method. To do this, start by adding the variable to the ReadWriteVariables field of the script component editor, then you can access this as done below.
Your variable is named rowCount. Are you looking to return the number of rows that go through the Data Flow Task? A Script Component is called once for each record in a Data Flow Task. To get the total number of records, use Row Count transformation instead and assign the variable to the result of this.
int rowCount;
public override void PreExecute()
{
base.PreExecute();
//get variable value before processing rows.
rowCount = Variables.RowCount;
}
public override void PostExecute()
{
base.PostExecute();
//update variable after records have been procssed
Variables.RowCount = rowCount;
}
For some of the fields in my webpage they can alternate between being readonly or not readonly. Currently they all have an ng-readonly attribute with a function call like this:
ng-readonly="isReadOnly(field)"
The function isReadOnly does some logic to determine whether it will return true/false.
However I am unsure if this is dynamic, eg. at some points in time isReadOnly can return a different boolean for the same field argument.
I have a collection that I want to bind as data input for a ComboBox:
private static var LOGOS:ArrayCollection = new ArrayCollection([
{index:0, label=logo1},
{index:1, label=logo2}
]);
<s:ComboBox selectedItem="#{model.labelIndex}" labelField="#label" dataProvider="{LOGOS}" />
Now, when selecting an item, the binding should send the associated index property of the objext to the model and update labelIndex.
Of course it does not work as above, because labelIndex is of different datatype than the ArrayCollection.
[Bindable]
private var model:MyModel;
[Bindable]
class MyModel {
public var:Number labelIndex;
}
Question: how can I map the array element to the model and vice versa?
What you are looking for will require some scripting, binding isn't smart enough to figure out how to handle this on its own.
You can use the BindingUtils class to define the bindings, and use the chain argument of the bindProperty method to modify how values are being looked up.
http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/mx/binding/utils/BindingUtils.html
For the combo.selectedItem to model.labelIndex binding, you can specify the chain as an array, where the elements define the path where to look for the value:
BindingUtils.bindProperty(model, 'labelIndex', combo, ['selectedItem', 'index']);
This will bind to the selectedItem property, and pass the value of the items index property.
The other way around is a little more tricky and will require using a getter function which grabs the object from the datasource, based on the labelIndex value:
BindingUtils.bindProperty(combo, 'selectedItem', model, {
name: 'labelIndex',
getter: function(host:MyModel):Object
{
return LOGOS.source.filter(function(item:Object, index:int, array:Array):Boolean
{
return item.index === host.labelIndex;
})[0];
}
});
This will bind to the labelIndex property, and the getter function will be invoked when the property changes. The function will filter the datasource based on the models changed labelIndex property value, and return the source object with the matching index property value, which will finally be set for the combobox selectedItem property.
Your combobox definition will of course need an id in order to be targetable via script
<s:ComboBox id="combo" dataProvider="{LOGOS}" />
Note that there's no need forthe the # in the labelField property, this is only used with XML datasources where you need to target an attribute. However, actually you don't need to specify this at all, since label is the default value of the labelField property.
I have a main view using several partial Views.
Each of these partials use a different model and have post action.
My problem is I need one property from my main view's model to be used in one of my partials.
The partial view which I need to pass this property view is the last stage in the process.
The application reaches a partial view that contains a switch statement , based on the status on the item being queried, decides which partial will be rendered.
I have the property passing that far and even have it included in the Renderaction for the partial but I don't know how to retrieve it in the controller, PartialViewResult.
In the main view:
#{Html.RenderPartial("StatusForm", Model.HeadingDataModel.Status, new ViewDataDictionary { { "PurchaseOrderNumber", Model.AccordionModel.LtsSpecific.PurchaseOrderNumber } });}
PurchaseOrderNumber is what I'm after. The value gets passed to the next stage:
#{
var obj = ViewData["PurchaseOrderNumber"];
}
And within the same view:
Html.RenderAction("FinishedCalibrationForm", obj);
How can I retreive this in my controller ?? The following is not correct I know, but you get the idea.
public PartialViewResult FinishedCalibrationForm( string obj)
All help is appreciated.
Calling Html.RenderAction or Html.Action is largely the same as Url.Action. There's many different overloads, but essentially, the first parameter is the action name, the second parameter is going to be either the controller name or an anonymous object of route values, and the third parameter will be an anonymous object of route values if the second parameter was used for the controller name.
Anyways, whatever you pass in the route values will be used to find and call the associated action, which includes parameters for the action. So, for your example:
Html.RenderAction("FinishedCalibrationForm", new { obj = obj })
Would properly pass obj into your action method. As you have it now, it's going to interpret the value of obj as the controller name the action is within, which is obviously not correct.
Using a value converter in WPF, you can return something like DependecyProperty.UnsetValue or Binding.DoNothing as special values to say leave the binding alone. Is there a similar mechanism in MVVMCross?
To be more specific about what I'm trying to do, is I have a view model property that is a three-state enum that I need to bind to 3 binary controls. So I thought I could bind each of the controls to a MyEnum -> bool converter that will have a conversion parameter set to the value of the converter and in the Convert method it will return true if the MyEnum state is equal to the parameter and false otherwise. So far so good. But I want this binding to be two-way, so I need to convert back. My convert back works something like this:
protected override MyEnum ConvertBack(bool value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
if (parameter is MyEnum)
{
if (value)
{
return (MyEnum)parameter; // this is fine
}
else
{
return ???
}
}
return base.ConvertBack(value, targetType, parameter, culture);
}
Basically, what I want to be able to do is say, if the state of my control is true update the bound property on my view model to be the same as the parameter, if not, leave the view model property alone.
Maybe this is the problem with using the strongly typed value converters?
If anybody else encounters a similar problem, in addition to Stuart's suggestions, this is what I actually ended up doing.
In the View Model
private MyEnum _selectedValue = MyEnum.SomeValue;
public MyEnum ? SelectedValue
{
get
{
return _selectedTab;
}
set
{
if (value.HasValue)
{
_selectedTab = value.Value;
RaisePropertyChanged(() => SelectedTab);
}
}
}
Then in my converter (now a MvxValueConverter<MyEnum?, bool>):
protected override MyEnum? ConvertBack(bool value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
if (parameter is MyEnum) // this is just a sanity check
{
if (value)
{
return (MyEnum)parameter;
}
else
{
return null
}
}
return base.ConvertBack(value, targetType, parameter, culture);
}
It's not a general solution, but it fits my immediate need.
Update: UnsetValue is now available in mvvmcross - so this answer is no longer required.
Binding.DoNothing, DependencyProperty.UnsetValue or equivalent are currently not implemented in the MvvmCross binding system, and I don't believe there are any feature or pull requests currently open on this.
I'm afraid I don't really understand your example - the 'conversion parameter set to the value of the converter' and the if (parameter is MyEnum) snippet rather threw me - as far as I know, the parameter in windows xaml binding is a constant so I don't quite understand this example. Sorry if I've misunderstood.
Regardless, some possible approaches that might be used to assist with getting this functionality up and running in your mvx app are:
You could throw an exception from the ValueConverter:
For the Convert direction, the binding FallbackValue is used if a ValueConverter fails (throws an exception)
For the ConvertBack direction, the binding does nothing if an exception is thrown (although this would unfortunately generate some trace "error" output each time)
You could implement a custom binding for your control - something which only fires change updates when the change is one you are interested in (some custom bindings are introduced in N=28 in http://mvvmcross.wordpress.com which creates bindings like BinaryEditFooTargetBinding.cs - it would be straight-forward to customise/filter the TargetOnMyCountChanged behaviour in that class)
You could implement a custom binary control - which only fires change updates when the change is one you are interested in (for various platforms, some custom controls are introduced in N=18 to N=20 in http://mvvmcross.wordpress.com)
You could implement ViewModel binary properties which mirror your View and map to your three state enum
You could use a ValueCombiner within the Tibet binding system - it should be relatively straight-forward to work out a combiner based on top of something like MvxSingleValueCombiner.cs
Alternatively/additionally, please do also consider raising a Feature and/or Pull Request for this 'do nothing' type of functionality to be included in the TryGetValue/SetValue methods in https://github.com/slodge/MvvmCross/blob/v3/Cirrious/Cirrious.MvvmCross.Binding/Bindings/SourceSteps/MvxSourceStep.cs#L66 - but obviously the timeline on that might be longer.