private System.ComponentModel.Design.Serialization.InstanceDescriptor ConvertToInstanceDescriptor(SqlParameter p) {
// MDAC 67321 - reducing parameter generated code
int flags = 0; // if part of the collection - the parametername can't be empty
if (p.ShouldSerializeSqlDbType()) {
flags |= 1;
}
if (p.ShouldSerializeSize()) {
flags |= 2;
}
if (!ADP.IsEmpty(p.SourceColumn)) {
flags |= 4;
}
if (null != p.Value) {
flags |= 8;
}
if ((ParameterDirection.Input != p.Direction) || p.IsNullable
|| p.ShouldSerializePrecision() || p.ShouldSerializeScale()
|| (DataRowVersion.Current != p.SourceVersion)
) {
flags |= 16; // v1.0 everything
}
if (p.SourceColumnNullMapping || !ADP.IsEmpty(p.XmlSchemaCollectionDatabase) ||
!ADP.IsEmpty(p.XmlSchemaCollectionOwningSchema) || !ADP.IsEmpty(p.XmlSchemaCollectionName)) {
flags |= 32; // v2.0 everything
}
Type[] ctorParams;
object[] ctorValues;
switch(flags) {
case 0: // ParameterName
case 1: // SqlDbType
ctorParams = new Type[] { typeof(string), typeof(SqlDbType) };
ctorValues = new object[] { p.ParameterName, p.SqlDbType };
break;
case 2: // Size
case 3: // Size, SqlDbType
ctorParams = new Type[] { typeof(string), typeof(SqlDbType), typeof(int) };
ctorValues = new object[] { p.ParameterName, p.SqlDbType, p.Size };
break;
case 4: // SourceColumn
case 5: // SourceColumn, SqlDbType
case 6: // SourceColumn, Size
case 7: // SourceColumn, Size, SqlDbType
ctorParams = new Type[] { typeof(string), typeof(SqlDbType), typeof(int), typeof(string) };
ctorValues = new object[] { p.ParameterName, p.SqlDbType, p.Size, p.SourceColumn };
break;
case 8: // Value
ctorParams = new Type[] { typeof(string), typeof(object) };
ctorValues = new object[] { p.ParameterName, p.Value };
break;
default:
if (0 == (32 & flags)) { // v1.0 everything
ctorParams = new Type[] {
typeof(string), typeof(SqlDbType), typeof(int), typeof(ParameterDirection),
typeof(bool), typeof(byte), typeof(byte),
typeof(string), typeof(DataRowVersion),
typeof(object) };
ctorValues = new object[] {
p.ParameterName, p.SqlDbType, p.Size, p.Direction,
p.IsNullable, p.PrecisionInternal, p.ScaleInternal,
p.SourceColumn, p.SourceVersion,
p.Value };
}
else { // v2.0 everything - round trip all browsable properties + precision/scale
ctorParams = new Type[] {
typeof(string), typeof(SqlDbType), typeof(int), typeof(ParameterDirection),
typeof(byte), typeof(byte),
typeof(string), typeof(DataRowVersion), typeof(bool),
typeof(object),
typeof(string), typeof(string),
typeof(string) };
ctorValues = new object[] {
p.ParameterName, p.SqlDbType, p.Size, p.Direction,
p.PrecisionInternal, p.ScaleInternal,
p.SourceColumn, p.SourceVersion, p.SourceColumnNullMapping,
p.Value,
p.XmlSchemaCollectionDatabase, p.XmlSchemaCollectionOwningSchema,
p.XmlSchemaCollectionName};
}
break;
}
System.Reflection.ConstructorInfo ctor = typeof(SqlParameter).GetConstructor(ctorParams);
return new System.ComponentModel.Design.Serialization.InstanceDescriptor(ctor, ctorValues);
}
