Comments on: get value from column using a column name string

By: The most-watched IT questions: April 2, 2012 - ITKE Community Blog

The most-watched IT questions: April 2, 2012 - ITKE Community Blog — Mon, 02 Apr 2012 15:53:31 +0000

[...] 6. Add your insight into solving how to get a value from a column in Visual Studio. [...]

By: ozvenison

ozvenison — Wed, 21 Mar 2012 06:58:05 +0000

the line value = v.GetType().GetProperty(m.ColumnName).GetValue(v, null);
was were I was ‘experimenting’

By: ozvenison

ozvenison — Wed, 21 Mar 2012 06:55:10 +0000

at the moment I have to 'hard code' via a switch statement for each table and column names.. this if course will not work when the users add other tables... here is sample:

            List spreadMapping = new List();
            foreach (var m in mappings)
            {
                foreach (var v in hvalues)
                {
                    SpreadMappings map = new SpreadMappings();
                    value = v.GetType().GetProperty(m.ColumnName).GetValue(v, null);
                    switch (m.ColumnName)
                    {
                        case "DocHeading":
                            map.ColumnX = m.ColumnX;
                            map.ColumnY = m.ColumnY;
                            map.ColumnValue = v.DocHeading;
                            map.ColumnName = m.ColumnName;
                            map.ColumnId = v.Id;
                            map.ColumnSheetName = sheetName;
                            spreadMapping.Add(map);
                        break;

                        case "OrderCarryOverUnit1":
                            map.ColumnX = m.ColumnX;
                            map.ColumnY = m.ColumnY;
                            map.ColumnValue = v.OrderCarryOverUnit1;
                            map.ColumnName = m.ColumnName;
                            map.ColumnId = v.Id;
                            map.ColumnSheetName = sheetName;
                            spreadMapping.Add(map);
                        break;

Cheers

By: ozvenison

ozvenison — Wed, 21 Mar 2012 06:30:28 +0000

ok…
what I am trying to do is get values from a table row to map the x,y cells of an excel sheet..

the first list contains the rows with Column_Name, yCord and yCord values (maplist)
The second list contains rows with the actual values… the number of columns varies depending on which table I am processing…

So, I loop through the 1st list and get a row from the spreadmaps,,, I then go through the second list and want to get the value from each row based on the column_name supplied from maplist…

so v.’column_name’… ie v.date or v.openingBalance or v.closing balance.. where the column is based on what is supplied by the column_name string from spreadmaps

I need to be ‘dynamic’ here as each sheet on the ‘spread’ control ca be based on a different table and therefore column_names
Hope this makes sense..

By: carlosdl

carlosdl — Tue, 20 Mar 2012 23:16:23 +0000

Please be a little more specific.

What exactly do you need help with ?

Does your code work (at least partially) ? Does it give errors ?
Where is the mlist and vlist declaration ?