Handling different types

ExcelORM/ExcelORM/ExcelReader.cs

@@ -31,12 +31,18 @@ public class ExcelReader
                 var property = current.GetType().GetProperty(item.PropertyName);
                 if (property == null) continue;
 
-                switch (property.PropertyType)
+                object? valueToSet = property.PropertyType switch
                 {
-                    case not null when property.PropertyType == typeof(string):
-                        property.SetValue(current, cell.Value.ToString());
-                        break;
-                }
+                    not null when property.PropertyType == typeof(string) => cell.Value.ToString(),
+                    not null when property.PropertyType == typeof(DateTime?) => cell.Value.IsDateTime ? cell.Value.GetDateTime() : null,
+                    not null when property.PropertyType == typeof(TimeSpan?) => cell.Value.IsTimeSpan ? cell.Value.GetTimeSpan() : null,
+                    not null when property.PropertyType == typeof(double?) => cell.Value.IsNumber ? cell.Value.GetNumber() : null,
+                    not null when property.PropertyType == typeof(int?) => cell.Value.IsNumber ? (int?)cell.Value.GetNumber() : null,
+                    _ => throw new NotSupportedException($"{property.PropertyType} isn't supported!")
+                };
+               
+                if (valueToSet != null)
+                    property.SetValue(current, valueToSet);
             }
 
             yield return current;

ExcelORM/ExcelORMTests/ExcelORMTests.csproj

@@ -42,6 +42,9 @@
       <None Update="testFiles\multipleSheets.xlsx">
         <CopyToOutputDirectory>Always</CopyToOutputDirectory>
       </None>
+      <None Update="testFiles\differentTypes.xlsx">
+        <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+      </None>
     </ItemGroup>
 
     <ItemGroup>

ExcelORM/ExcelORMTests/ReaderTests.cs

@@ -9,6 +9,7 @@ public class ReaderTests
     private const string FilteredFile = "testFiles/filtered.xlsx";
     private const string DifficultFile = "testFiles/columnsOnTheLeftHeaderNotFirstRow.xlsx";
     private const string MultipleSheetsFile = "testFiles/multipleSheets.xlsx";
+    private const string DifferentTypesFile = "testFiles/differentTypes.xlsx";
     
     [Fact]
     public void Read()
@@ -60,4 +61,12 @@ public class ReaderTests
         Assert.NotEmpty(results);
         Assert.Equal(6, results.Length);
     }
+    
+    [Fact]
+    public void ReadDifferentTypes()
+    {
+        var reader = new ExcelReader(DifferentTypesFile);
+        var results = reader.Read<TestTypes>().ToArray();
+        Assert.NotEmpty(results);
+    }
 }

ExcelORM/ExcelORMTests/TestTypes.cs

@@ -0,0 +1,10 @@
+namespace ExcelORMTests;
+
+public record TestTypes
+{
+    public string? Text { get; set; }
+    public DateTime? Date { get; set; }
+    public TimeSpan? TimeSpan { get; set; }
+    public int? Int { get; set; }
+    public double? Double { get; set; }
+}