Add AlternateTextField, ImageUrlField and NavigateUrlField AdRotator properties

src/BlazorWebFormsComponents.Test/AdRotator/Rotate.razor

@@ -6,6 +6,12 @@
 	</ComponentUnderTest>
 </Fixture>
 
+<Fixture Test="RotateTestWithCustomFieldsAttributes">
+	<ComponentUnderTest>
+		<AdRotator AdvertisementFile="Ads4.xml" AlternateTextField="Alt" ImageUrlField="Image" NavigateUrlField="Url" Target="_blank"></AdRotator>
+	</ComponentUnderTest>
+</Fixture>
+
 @code {
 	void RotateTest(Fixture fixture)
 	{
@@ -15,4 +21,15 @@
 
 		Assert.Contains(alternatText, new[] { "CSharp", "Visual Basic" });
 	}
+
+	void RotateTestWithCustomFieldsAttributes(Fixture fixture)
+	{
+		var cut = fixture.GetComponentUnderTest();
+		var anchor = cut.Find("a");
+		var img = cut.Find("img");
+		var alternatText = img.Attributes["alt"].Value;
+
+		Assert.True(anchor.HasAttribute("href"));
+		Assert.Contains(alternatText, new[] { "CSharp", "Visual Basic" });
+	}
 }

src/BlazorWebFormsComponents.Test/Ads4.xml

@@ -0,0 +1,21 @@
+<Advertisements>
+	<Ad>
+		<Image>/img/C#.png</Image>
+		<Height>343</Height>
+		<Width>397</Width>
+		<Url>http://www.microsoft.com</Url>
+		<Alt>CSharp</Alt>
+		<Impressions>90</Impressions>
+		<Keyword>c#</Keyword>
+
+	</Ad>
+	<Ad>
+		<Image>/img/VB.png</Image>
+		<Height>343</Height>
+		<Width>397</Width>
+		<Url>http://www.microsoft.com</Url>
+		<Alt>Visual Basic</Alt>
+		<Impressions>80</Impressions>
+		<Keyword>vb</Keyword>
+	</Ad>
+</Advertisements>

src/BlazorWebFormsComponents.Test/BlazorWebFormsComponents.Test.csproj

@@ -6,6 +6,10 @@
 		<Configurations>Debug;Release;WebForms</Configurations>
 	</PropertyGroup>
 
+	<ItemGroup>
+	  <None Remove="Ads4.xml" />
+	</ItemGroup>
+
 
 	<ItemGroup>
 		<PackageReference Include="bunit" Version="1.0.0-beta-7" />
@@ -28,6 +32,9 @@
 	</ItemGroup>
 
   <ItemGroup>
+    <Content Include="Ads4.xml">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
     <Content Include="Ads3.xml">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </Content>

src/BlazorWebFormsComponents/AdRotator.razor.cs

@@ -7,43 +7,71 @@
 
 namespace BlazorWebFormsComponents
 {
-  public partial class AdRotator : BaseWebFormsComponent
-  {
-	[Parameter]
-	public string AdvertisementFile { get; set; }
+	public partial class AdRotator : BaseWebFormsComponent
+	{
+		private static readonly string DefaultAlternateTextField = "AlternateText";
+		private static readonly string DefaultImageUrlField = "ImageUrl";
+		private static readonly string DefaultNavigateUrlField = "NavigateUrl";
 
-	[Parameter]
-	public string Target { get; set; }
+		[Parameter]
+		public string AlternateTextField { get; set; } = DefaultAlternateTextField;
 
-	internal Advertisment GetActiveAdvertisment()
-	{
-	  var advertisments = GetAdvertismentsFileContent(AdvertisementFile);
+		[Parameter]
+		public string AdvertisementFile { get; set; }
 
-	  if (advertisments == null || advertisments.Count() == 0)
-	  {
-		return null;
-	  }
+		[Parameter]
+		public string ImageUrlField { get; set; } = DefaultImageUrlField;
 
-	  var rnd = new Random().Next(advertisments.Count());
+		[Parameter]
+		public string NavigateUrlField { get; set; } = DefaultNavigateUrlField;
 
-	  return advertisments.ElementAt(rnd);
-	}
+		[Parameter]
+		public string Target { get; set; }
 
-	private static IEnumerable<Advertisment> GetAdvertismentsFileContent(string fileName)
-	{
-	  var xmlDocument = XDocument.Load(new StreamReader(fileName));
-
-	  return xmlDocument.Descendants("Ad")
-		  .Select(a => new Advertisment
-		  {
-			ImageUrl = a.Descendants("ImageUrl").FirstOrDefault()?.Value,
-			Height = a.Descendants("Height").FirstOrDefault()?.Value,
-			Width = a.Descendants("Width").FirstOrDefault()?.Value,
-			NavigateUrl = a.Descendants("NavigateUrl").FirstOrDefault()?.Value,
-			AlternateText = a.Descendants("AlternateText").FirstOrDefault()?.Value,
-			Impressions = a.Descendants("Impressions").FirstOrDefault()?.Value,
-			Keyword = a.Descendants("Keyword").FirstOrDefault()?.Value
-		  });
+		internal Advertisment GetActiveAdvertisment()
+		{
+			if (string.IsNullOrEmpty(AlternateTextField))
+			{
+				throw new ArgumentException("AlternateTextField can't be null or empty.", nameof(AlternateTextField));
+			}
+
+			if (string.IsNullOrEmpty(ImageUrlField))
+			{
+				throw new ArgumentException("AlternateTextField can't be null or empty.", nameof(ImageUrlField));
+			}
+
+			if (string.IsNullOrEmpty(NavigateUrlField))
+			{
+				throw new ArgumentException("AlternateTextField can't be null or empty.", nameof(NavigateUrlField));
+			}
+
+			var advertisments = GetAdvertismentsFileContent(AdvertisementFile);
+
+			if (advertisments == null || advertisments.Count() == 0)
+			{
+				return null;
+			}
+
+			var rnd = new Random().Next(advertisments.Count());
+
+			return advertisments.ElementAt(rnd);
+		}
+
+		private IEnumerable<Advertisment> GetAdvertismentsFileContent(string fileName)
+		{
+			var xmlDocument = XDocument.Load(new StreamReader(fileName));
+
+			return xmlDocument.Descendants("Ad")
+				.Select(a => new Advertisment
+				{
+					ImageUrl = a.Descendants(ImageUrlField).FirstOrDefault()?.Value,
+					Height = a.Descendants("Height").FirstOrDefault()?.Value,
+					Width = a.Descendants("Width").FirstOrDefault()?.Value,
+					NavigateUrl = a.Descendants(NavigateUrlField).FirstOrDefault()?.Value,
+					AlternateText = a.Descendants(AlternateTextField).FirstOrDefault()?.Value,
+					Impressions = a.Descendants("Impressions").FirstOrDefault()?.Value,
+					Keyword = a.Descendants("Keyword").FirstOrDefault()?.Value
+				});
+		}
 	}
-  }
 }