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Fixed TypeHelper #535

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Fixed TypeHelper #535

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11 changes: 11 additions & 0 deletions S7.Net.UnitTest/S7NetTestsSync.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -1015,6 +1015,17 @@ public void T26_ReadWriteDouble()
Assert.AreEqual(test_value, result, "Compare Write/Read");
}

[TestMethod]
public void T26_ReadWriteDoubles()
{
double[] test_values = [ 55.66, 89.88 ];
plc.Write(DataType.DataBlock, 1, 0, test_values);
var result = (double[])plc.Read(DataType.DataBlock, 1, 0, VarType.LReal, 2);

Assert.AreEqual(test_values[0], result[0], "Compare Write/Read 0");
Assert.AreEqual(test_values[1], result[1], "Compare Write/Read 1");
}

[TestMethod]
public void T27_ReadWriteBytesMany()
{
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5 changes: 3 additions & 2 deletions S7.Net/Types/TypeHelper.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -11,11 +11,12 @@ internal static class TypeHelper
/// </summary>
public static byte[] ToByteArray<T>(T[] value, Func<T, byte[]> converter) where T : struct
{
var buffer = new byte[Marshal.SizeOf(default(T)) * value.Length];
var typeSize = Marshal.SizeOf(default(T));
var buffer = new byte[typeSize * value.Length];
var stream = new MemoryStream(buffer);
foreach (var val in value)
{
stream.Write(converter(val), 0, 4);
stream.Write(converter(val), 0, typeSize);
}

return buffer;
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