Databases
StackOverflow2013
Postsdbo
PO
 

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  1. PO
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    <p>another idea is to have a helper class to do this by reflecting the object and extract its all data members and gather all fields size by sizeof() , it will be a little bit complicated but it is implementable </p> <p>this class will calculate the actual size of an object , but i have tested it just a few times and a few objects were tested but i think i will be working.</p> <pre><code>public class SizeHelper { private static int GetTypeSizeArray(string typeName, object objValue) { switch (typeName) { case "System.Double[]": return sizeof(System.Double) * ((System.Double[]) objValue).Length ; case "System.Single[]": return sizeof(System.Single) * ((System.Single[])objValue).Length; case "System.Char[]": return sizeof(System.Char) * ((System.Char[])objValue).Length; case "System.Int16[]": return sizeof(System.Int16) * ((System.Int16[])objValue).Length; case "System.Int32[]": return sizeof(System.Int32) * ((System.Int32[])objValue).Length; case "System.Int64[]": return sizeof(System.Int64) * ((System.Int64[])objValue).Length; case "System.UInt16[]": return sizeof(System.UInt16) * ((System.UInt16[])objValue).Length; case "System.UInt32[]": return sizeof(System.UInt32) * ((System.UInt32[])objValue).Length; case "System.UInt64[]": return sizeof(System.UInt64) * ((System.UInt64[])objValue).Length; case "System.Decimal[]": return sizeof(System.Decimal) * ((System.Decimal[])objValue).Length; case "System.Byte[]": return sizeof(System.Byte) * ((System.Byte[])objValue).Length; case "System.SByte[]": return sizeof(System.SByte) * ((System.SByte[])objValue).Length; case "System.Boolean": return sizeof (System.Boolean)*((System.Boolean[]) objValue).Length; default: return 0; } } public static int GetSize(object obj) { Type t = obj.GetType(); FieldInfo[] fields = t.GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static); int size = 0; foreach (FieldInfo fieldInfo in fields) { if (fieldInfo.FieldType.BaseType.FullName.Equals("System.ValueType")) { size += GetTypeSize(fieldInfo.FieldType.FullName); } else if (fieldInfo.FieldType.BaseType.FullName.Equals("System.Array")) { var subObj = fieldInfo.GetValue(obj); if (subObj != null) size += GetTypeSizeArray(fieldInfo.FieldType.FullName, subObj); } else if(fieldInfo.FieldType.FullName.Equals("System.String")) { var subObj = fieldInfo.GetValue(obj); if (subObj != null) { size += subObj.ToString().Length*sizeof (System.Char); } } else { var subObj = fieldInfo.GetValue(obj); if (subObj != null) size += GetSize(subObj); } } return size; } private static int GetTypeSize(string typeName) { switch (typeName) { case "System.Double": return sizeof(System.Double); case "System.Single": return sizeof(System.Single); case "System.Char": return sizeof(System.Char); case "System.Int16": return sizeof(System.Int16); case "System.Int32": return sizeof(System.Int32); case "System.Int64": return sizeof(System.Int64); case "System.UInt16": return sizeof(System.UInt16); case "System.UInt32": return sizeof(System.UInt32); case "System.UInt64": return sizeof(System.UInt64); case "System.Decimal": return sizeof(System.Decimal); case "System.Byte": return sizeof(System.Byte); case "System.SByte": return sizeof(System.SByte); case "System.Boolean": return sizeof (System.Boolean); default: return 0; } } } </code></pre>
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    1. POprogrammatically find memory used by object
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USnawfal
    1. USH-Bahrami
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. COAnd then add a fixed size for the header block. But how do you treat strings and other outgoing references?
      singulars
      1. PO
      1. USHenk Holterman
    2. COactually strings are char arrays so we can count its length and multiply to sizeof(char) , and for other objects in a given object we can use recursive semantic to get their size.
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      1. PO
      1. USH-Bahrami
 

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