Fix some issues with incorrect binding result types

* ExpectedType property can now be null, when the assigned property is unknwon:
   - this means that CreateBinding will actually create a strongly
     typed instance, instead of just ValueBindingExpression<object> or similar
* AutoUI uses props.Property instead of CreateValueBinding where possible

Author: exyi

src/AutoUI/Core/PropertyHandlers/FormEditors/EnumComboBoxFormEditorProvider.cs

@@ -42,7 +42,7 @@ public override DotvvmControl CreateControl(PropertyDisplayMetadata property, Au
                 .SetCapability(props.Html)
                 .SetProperty(c => c.Enabled, props.Enabled)
                 .SetProperty(c => c.SelectionChanged, props.Changed)
-                .SetProperty(c => c.SelectedValue, (IValueBinding)context.CreateValueBinding(property));
+                .SetProperty(c => c.SelectedValue, props.Property);
 
             if (isNullable)
             {

src/AutoUI/Core/PropertyHandlers/GridColumns/CheckBoxGridColumnProvider.cs

@@ -15,7 +15,7 @@ public override bool CanHandleProperty(PropertyDisplayMetadata property, AutoUIC
         protected override GridViewColumn CreateColumnCore(PropertyDisplayMetadata property, AutoGridViewColumn.Props props, AutoUIContext context)
         {
             var column = new GridViewCheckBoxColumn();
-            column.SetBinding(GridViewCheckBoxColumn.ValueBindingProperty, context.CreateValueBinding(property));
+            column.SetBinding(GridViewCheckBoxColumn.ValueBindingProperty, props.Property);
             return column;
         }
     }

src/Framework/Framework/Compilation/Binding/GeneralBindingPropertyResolvers.cs

@@ -174,12 +174,20 @@ expression is JsNewExpression ||
 
         public ResultTypeBindingProperty GetResultType(ParsedExpressionBindingProperty expression) => new ResultTypeBindingProperty(expression.Expression.Type);
 
-        public ExpectedTypeBindingProperty GetExpectedType(AssignedPropertyBindingProperty? property = null)
+        public ExpectedTypeBindingProperty? GetExpectedType(AssignedPropertyBindingProperty? property = null)
         {
             var prop = property?.DotvvmProperty;
-            if (prop == null) return new ExpectedTypeBindingProperty(typeof(object));
+            if (prop == null) return null;
 
-            return new ExpectedTypeBindingProperty(prop.IsBindingProperty ? (prop.PropertyType.GenericTypeArguments.SingleOrDefault() ?? typeof(object)) : prop.PropertyType);
+            if (prop.IsBindingProperty)
+            {
+                if (prop.PropertyType.GenericTypeArguments.SingleOrDefault() is {} type)
+                    return new ExpectedTypeBindingProperty(type);
+                else
+                    return null;
+            }
+
+            return new ExpectedTypeBindingProperty(prop.PropertyType);
         }
 
         public BindingCompilationRequirementsAttribute GetAdditionalResolversFromProperty(AssignedPropertyBindingProperty property)
@@ -264,9 +272,9 @@ public NegatedBindingExpression NegateBinding(ParsedExpressionBindingProperty e,
                 (Expression)Expression.Not(e.Expression)
             ));
         }
-        public ExpectedAsStringBindingExpression ExpectAsStringBinding(ParsedExpressionBindingProperty e, ExpectedTypeBindingProperty expectedType, IBinding binding)
+        public ExpectedAsStringBindingExpression ExpectAsStringBinding(ParsedExpressionBindingProperty e, IBinding binding, ExpectedTypeBindingProperty? expectedType = null)
         {
-            if (expectedType.Type == typeof(string))
+            if (expectedType is {} && expectedType.Type == typeof(string))
                 return new(binding);
 
             return new(binding.DeriveBinding(new ExpectedTypeBindingProperty(typeof(string)), e));

src/Framework/Framework/Controls/GridViewCheckBoxColumn.cs

@@ -15,9 +15,9 @@ public class GridViewCheckBoxColumn : GridViewColumn
         /// Gets or sets a binding which retrieves the value to display from the current data item.
         /// </summary>
         [MarkupOptions(AllowHardCodedValue = false, Required = true)]
-        public IStaticValueBinding<bool?> ValueBinding
+        public IStaticValueBinding ValueBinding
         {
-            get { return (IStaticValueBinding<bool?>)GetValueRaw(ValueBindingProperty)!; }
+            get { return (IStaticValueBinding)GetValueRaw(ValueBindingProperty)!; }
             set { SetValue(ValueBindingProperty, value); }
         }
         public static readonly DotvvmProperty ValueBindingProperty =

src/Framework/Framework/Controls/GridViewDataSetBindingProvider.cs

@@ -119,8 +119,8 @@ ParameterExpression CreateParameter(DataContextStack dataContextStack, string na
                     : null,
 
             PageNumberText = isServerOnly switch {
-                true => service.Cache.CreateResourceBinding<string>("_this + 1", pageIndexDataContext),
-                false => service.Cache.CreateValueBinding<string>("_this + 1", pageIndexDataContext)
+                true => service.Cache.CreateResourceBinding<string>("(_this + 1) + ''", pageIndexDataContext),
+                false => service.Cache.CreateValueBinding<string>("(_this + 1) + ''", pageIndexDataContext)
             },
             HasMoreThanOnePage =
                 GetValueBindingOrNull<IPageableGridViewDataSet<PagingOptions>, bool>(d => d.PagingOptions.PagesCount > 1) ??

src/Framework/Framework/Controls/Literal.cs

@@ -97,7 +97,7 @@ bool isFormattedType(Type? type) =>
                 type != null && (type == typeof(float) || type == typeof(double) || type == typeof(decimal) ||
                 type == typeof(DateTime) || type == typeof(DateOnly) || type == typeof(TimeOnly) || isFormattedType(Nullable.GetUnderlyingType(type)));
 
-            bool isFormattedTypeOrObj(Type? type) => type == typeof(object) || isFormattedType(type);
+            bool isFormattedTypeOrObj(Type? type) => type is null || type == typeof(object) || isFormattedType(type);
 
             return isFormattedType(binding?.ResultType) && isFormattedTypeOrObj(binding?.GetProperty<ExpectedTypeBindingProperty>(ErrorHandlingMode.ReturnNull)?.Type);
         }

src/Samples/Tests/Abstractions/SamplesRouteUrls.designer.cs

@@ -510,10 +510,10 @@ public void Control_GridView_GridViewInlineEditing_PagingWhenEditing(string path
         [Theory]
         [InlineData(SamplesRouteUrls.ControlSamples_GridView_GridViewPagingSorting)]
         [InlineData(SamplesRouteUrls.ControlSamples_GridView_GridViewServerRender)]
-        [InlineData(SamplesRouteUrls.ControlSamples_GridView_GridViewPagingSortingServerOnly)]
+        [InlineData(SamplesRouteUrls.ControlSamples_GridView_GridViewPagingSortingServerSide)]
         [SampleReference(nameof(SamplesRouteUrls.ControlSamples_GridView_GridViewPagingSorting))]
         [SampleReference(nameof(SamplesRouteUrls.ControlSamples_GridView_GridViewServerRender))]
-        [SampleReference(nameof(SamplesRouteUrls.ControlSamples_GridView_GridViewPagingSortingServerOnly))]
+        [SampleReference(nameof(SamplesRouteUrls.ControlSamples_GridView_GridViewPagingSortingServerSide))]
         public void Control_GridView_GridViewPagingSortingBase(string path)
         {
             RunInAllBrowsers(browser => {

src/Samples/Tests/Tests/Control/GridViewTests.cs

@@ -11,10 +11,10 @@
 			<!-- ko foreach: { data: Customers()?.PagingOptions()?.NearPageIndexes } -->
 			<li data-bind="css: { active: $data == $parent.Customers()?.PagingOptions()?.PageIndex() }">
 				<!-- ko if: $data != $parent.Customers()?.PagingOptions()?.PageIndex() -->
-				<a data-bind="text: dotvvm.globalize.bindingNumberToString($data + 1)" href="javascript:;" onclick="dotvvm.postBack(this,[&quot;Customers()?.PagingOptions()?.NearPageIndexes/[$index]&quot;],&quot;J4s1chtqLBUO+Bt2&quot;,&quot;&quot;,null,[],[],undefined).catch(dotvvm.log.logPostBackScriptError);event.stopPropagation();return false;"></a>
+				<a data-bind="text: $data + 1" href="javascript:;" onclick="dotvvm.postBack(this,[&quot;Customers()?.PagingOptions()?.NearPageIndexes/[$index]&quot;],&quot;J4s1chtqLBUO+Bt2&quot;,&quot;&quot;,null,[],[],undefined).catch(dotvvm.log.logPostBackScriptError);event.stopPropagation();return false;"></a>
 				<!-- /ko -->
 				<!-- ko if: $data == $parent.Customers()?.PagingOptions()?.PageIndex() -->
-				<span data-bind="text: dotvvm.globalize.bindingNumberToString($data + 1)"></span>
+				<span data-bind="text: $data + 1"></span>
 				<!-- /ko -->
 			</li>
 			<!-- /ko -->

src/Tests/ControlTests/testoutputs/DataPagerTests.CommandDataPager.html

@@ -17,13 +17,13 @@
 			<!-- ko foreach: { data: Customers()?.PagingOptions()?.NearPageIndexes } -->
 			<li data-bind="css: { active: $data == $parent.Customers()?.PagingOptions()?.PageIndex() }">
 				<!-- ko if: $data != $parent.Customers()?.PagingOptions()?.PageIndex() -->
-				<a data-bind="text: dotvvm.globalize.bindingNumberToString($data + 1)" href="javascript:;" onclick="dotvvm.applyPostbackHandlers(async (options) => {
+				<a data-bind="text: $data + 1" href="javascript:;" onclick="dotvvm.applyPostbackHandlers(async (options) => {
 	let cx = options.knockoutContext;
 	return await dotvvm.dataSet.loadDataSet(cx.$parent.Customers, (options) => dotvvm.dataSet.translations.PagingOptions.goToPage(ko.unwrap(options).PagingOptions, cx.$rawData.state), cx.$gridViewDataSetHelper.loadDataSet, cx.$gridViewDataSetHelper.postProcessor);
 },this).catch(dotvvm.log.logPostBackScriptError);event.stopPropagation();return false;"></a>
 				<!-- /ko -->
 				<!-- ko if: $data == $parent.Customers()?.PagingOptions()?.PageIndex() -->
-				<span data-bind="text: dotvvm.globalize.bindingNumberToString($data + 1)"></span>
+				<span data-bind="text: $data + 1"></span>
 				<!-- /ko -->
 			</li>
 			<!-- /ko -->