/// <summary>
/// This function converts the itmVals values to the datatype of ValueMember column
/// and add the row to DataTable.
/// </summary>
/// <param name="ctrl"></param>
/// <param name="itmVals"></param>
/// <param name="dispVals"></param>
internal void AddRows(StorageAttribute dataType, string[] itmVals, string[] dispVals)
{
Debug.Assert(itmVals.Length == dispVals.Length);
Object obj = null;
Type dnDataType = (DataTblObj.Columns[GuiConstants.STR_VALUE_MEMBER]).DataType;
for (int i = 0; i < dispVals.Length; i++)
{
// convert the value to type of ValueMember column of the DataTable
obj = DNConvert.convertMagicToDotNet(itmVals[i], dataType, dnDataType);
DataTblObj.Rows.Add(obj, dispVals[i]);
}
}
/// <summary>
/// For .Net choice control the columns added will always be DisplayMember & ValueMember
/// </summary>
/// <param name="dataType">.Net choice control's Attribute</param>
/// <param name="itmList">Value Member List to get the .Net type from ctrls Atrribute(Magic type)</param>
internal void AddColumns(StorageAttribute dataType, string[] itmList)
{
Type dnDataType = null;
if (dataType == StorageAttribute.NUMERIC)
{
for (int i = 0; i < itmList.Length; i++)
{
dnDataType = DNConvert.getDefaultDotNetTypeForMagicType(itmList[i], dataType);
if (dnDataType == typeof(Double))
{
break;
}
}
}
else
{
dnDataType = DNConvert.getDefaultDotNetTypeForMagicType(null, dataType);
}
// ValueMember column of the DataTable must have the type of the LinkField if set, else
// Data if set else unicode.
MGDataColumn valMemCol = new MGDataColumn()
{
Name = GuiConstants.STR_VALUE_MEMBER,
DataType = dnDataType
};
MGDataColumn dispMemCol = new MGDataColumn()
{
Name = GuiConstants.STR_DISPLAY_MEMBER,
DataType = typeof(String)
};
// Add to the columns to the ColumList collection of the MGDataTable
ColumnList = new List <MGDataColumn>();
ColumnList.Add(valMemCol);
ColumnList.Add(dispMemCol);
// Add the columns from the column list to the DataTable
AddColumns();
}
/// <summary>Updates specified entry in DNObjectCollection table</summary>
/// <param name="destKey">Destination entry key</param>
/// <param name="srcObj">Source .net object</param>
/// <returns></returns>
public void UpdateDNObject(int destKey, Object srcObj)
{
// for controls, events are queried from MgGui.dll when the control is created.
String[] currentTaskDNEventsNames = DNObjectsCollection.GetCurrentTaskDNEventsNames(destKey);
Object destObj = DNObjectsCollection.GetDNObj(destKey);
Type destDNType = DNObjectsCollection.GetDNType(destKey);
// perform a cast into Type 'destDNType'
if (destDNType != null)
{
srcObj = DNConvert.doCast(srcObj, destDNType);
}
// check if the object has changed
bool valsEqual = (srcObj == destObj || srcObj != null && destObj != null && srcObj.Equals(destObj));
if (!valsEqual)
{
// update the object into DNObjectCollection
DNObjectsCollection.Update(destKey, srcObj);
DNObjectEventsCollection.removeEvents(destObj);
DNObjectEventsCollection.addEvents(srcObj, currentTaskDNEventsNames);
}
}
