Multiple forms and datagridviews

Henry Minute

Going back to your previous post, you have said that for documentation type a client might have Full Doc, Limited Doc and No Doc; whilst another might have 1, 2 and 3. Are the options finite? i.e. are there always 3 possibilities for documentation type, and is that the same for all fields? (not necessarily 3, it could be 10, 7 or whatever) The point is are all options (or at least the number of possible options) known to yourselves prior to recieving the file(s). Also will the same client always use the same headings. On to this post. I am not 100% on the reason for the multiple dgvs on the mapping form. In Mapping form, is the purpose of the different dgvs to collate, based on documentation type (dgv1 = full doc, dgv2 = limited doc etc), or to summarise (dgv1 = doctype, with a row for count of full doc, another for count of limited doc etc) with the other dgvs for the other field types. Is the final objective to just display the data, to stream it to another application or to write it back out to a file and if so what type of file (.csv, mdf, txt) The point I made previously (about doing it backwards) is that to do anything with the clients data, whether selecting on a field type, collating on a field type, or whatever, you have at that stage to use the clients wording/coding scheme.

Henry Minute Do not read medical books! You could die of a misprint. - Mark Twain Girl: (staring) "Why do you need an icy cucumber?" “I want to report a fraud. The government is lying to us all.”

bwood2020

No, there could be up to 30+ different doc types. I just used three for this example. Same goes for the other fields we need to map data for. Not all possible data is known until we receive the data and the same client doesn't always give us the same headings or file formats. nothing is considered finite between the data or the headers. The reason for the multiple dgv's is to have a dgv per field where the data needs to be mapped. So, dgv1 is for Doc Types, dgv2 is for Purpose Types, dgv3 is for Occupancy Types and so on. So the second part of the third paragraph you wrote is correct "or to summarize (dgv1 = doctype, with a row for count of full doc, another for count of limited doc etc) with the other dgvs for the other field types". So the all the dgv's have three columns. The first will be the column that gets populated with the data from the file or the dgv on Form 1(example Full Documentation). The second column is a combo dropdown that contains the new code (F for Full Documentation). The third is a count of how many loans have Full Documentation. After all Doc Types have been recoded, then dgv on Form 1 needs to be updated. For example, Full Documentation is will be updated to F. Once the dgv on Form 1 has been updated with the new codes from form 2, I will output it to excel for our SSIS (this is done and has been tested).

Henry Minute

Hi there. I have been thinking about this and have made a simple demo of something that I think might work. If you have the time would you give it a quick whirl to see if it might suit. The demo consists of two forms each having a datagridview and a button, you will be able to work out the names of these controls from the code I will post. I will post the code for the two forms in separate posts, as it would otherwise be a very long post. This is the test data I have used for the demo and if you could save it as TestData.csv in the directory with the executable for the demo, normally 'application-files-directory\bin\debug' TestData.csv

Prop, Offer, Docs, Gtee, Figs
house, no, full, none, true
flat, true, part, complete, no
appt, no, no, yes, yes
bungalow, yes, full, no, no
mais, false, yes, no, comp

The code for the first form follows shortly.

Henry Minute Do not read medical books! You could die of a misprint. - Mark Twain Girl: (staring) "Why do you need an icy cucumber?" “I want to report a fraud. The government is lying to us all.”

Henry Minute

Code for the first form.

public partial class ListEditorForm : Form
{
	List<string> standardList = new List<string>();
	Dictionary<string, string> headers = new Dictionary<string, string>();
	DataSet headerDataSet = null;
	DataTable headerTable = null;
	MappingForm mappingForm = null;
	readonly string dataFile = "TestData.csv";

	FieldMappingDictionary docsDictionary = null;

	public ListEditorForm()
	{
		InitializeComponent();
		InitStandardList();
	}

	private void InitStandardList()
	{
		standardList.AddRange(new string\[\] { "Property", "Offer", "Documentation", "Figures", "Guarantee" });
	}

	private void ProcessMods()
	{
		// Create a copy of original table structure with
		// standardized column names\*\*
		// load original file data into it
		// then do a series of updates using the docsDictionary, and the
		// other Dictionaries
		// STEP THROUGH THIS TO WATCH UPDATE STATEMENT BUILDING
		StringBuilder selectBuilder = null;
		foreach (string key in this.docsDictionary.Keys)
		{
			foreach (string val in this.docsDictionary\[key\])
			{
				selectBuilder = new StringBuilder();
				selectBuilder.Append("UPDATE <yourtablenamehere\*\*> SET Documentation = ");
				selectBuilder.Append(key);
				selectBuilder.Append(" WHERE Documentation = ");
				selectBuilder.Append(val);

				string updateQuery = selectBuilder.ToString();

				// execute the query here
				// you know OleDbConnection, OleDbcommand etc.
				// then go round for next mod
			}
			// go round for next key
		}

		// then do same for next dictionary
	}

	private Dictionary<string, string> MakeHeaderDictionary()
	{
		Dictionary<string, string> result = new Dictionary<string, string>();
		foreach (DataRow row in this.headerTable.Rows)
		{
			result.Add(row\[1\].ToString(), row\[0\].ToString());
		}

		return result;
	}

	#region ListEditorForm PROPERTIES ...............................
	public Dictionary<string, string> Headers
	{
		get
		{
			return this.headers;
		}

		private set
		{
			this.headers = value;
		}
	}

	private MappingForm MappingForm
	{
		get
		{
			if (this.mappingForm == null)
			{
				this.mappingForm = new MappingForm();
			}

			return this.mappingForm;
		}
	}
	#endregion ListEditorForm PROPERTIES

	private void ListEditorForm\_Load(object sender, EventArgs e)
	{
		string headerLine;
		using (StreamReader

Henry Minute

Code for second form.

public partial class MappingForm : Form
{
	List<string> standardDocumentList = new List<string>();
	FieldMappingDictionary documentsDictionary = new FieldMappingDictionary();

	private Dictionary<string, string> headerDictionary = null;
	private string dataFile;

	public MappingForm()
	{
		InitializeComponent();

		InitLookupLists();
	}

	private void InitLookupLists()
	{
		this.standardDocumentList.AddRange(new string\[\] { "Full", "Partial", "None" });
	}

	private void MappingForm\_Load(object sender, EventArgs e)
	{
		DataGridView dgv = null;
		string headerString = null;

		foreach (string key in this.headerDictionary.Keys)
		{
			headerString = this.headerDictionary\[key\];
			switch (key)
			{
				case "Documentation":
					dgv = this.dgvDocumentation;
					break;
				case "Property":
					dgv = null;
					break;
				case "Offer":
					dgv = null;
					break;
				case "Figures":
					dgv = null;
					break;
				case "Guarantee":
					dgv = null;
					break;
			}

			if (dgv != null)
			{
				this.FillDatagrid(headerString, dgv);
			}
		}
	}

	DataTable dFill = null;
	private void FillDatagrid(string headerString, DataGridView dgv)
	{
		//Connect to csv file
		String comString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" +
			Path.GetDirectoryName(Path.GetFullPath(this.dataFile)) + @";Extended Properties=""Text;HDR=YES;FMT=Delimited;IMEX=1\\""";

		String strSql = "SELECT DISTINCT " + headerString + " FROM \[" + Path.GetFileName(this.dataFile) + "\]";
		using (OleDbConnection conCSV = new OleDbConnection(comString))
		{
			conCSV.Open();
			OleDbCommand dbCommand = new OleDbCommand(strSql, conCSV);
			OleDbDataAdapter dAdapter = new OleDbDataAdapter(dbCommand);
			dFill = new DataTable();
			dAdapter.Fill(dFill);
		}

		bindingSource1.DataSource = dFill;
		dgv.DataSource = bindingSource1;

		// Set up lookup for dgvDocumentation
		// only temporarilly here for demo
		DataGridViewComboBoxColumn lookupColumn = new DataGridViewComboBoxColumn();
		this.dgvDocumentation.Columns.Add(lookupColumn);
		lookupColumn.ValueType = typeof(string);
		lookupColumn.HeaderText = "Standard";
		lookupColumn.DataSource = this.standardDocumentList;

		for (int i = 0; i < dgv.Columns.Count; i++)
		{
			dgv.Columns\[i\].SortMode = DataGridViewColumnSortMode.NotSortable;
			dgv.Columns\[i\].AutoSizeMode = DataGridViewAutoSizeColumn

Henry Minute

public class FieldMappingDictionary : Dictionary>
{
public void Add(string key, string value)
{
// if the key is already in the list
if (base.Keys.Contains(key))
{
// only do it if not already there
if (!base[key].Contains(value))
{
// add the new value
base[key].Add(value);
}
}
else
{
// if the key ain't there, add it and a new values list
List list = new List();
list.Add(value);
base.Add(key, list);
}
}
}

This is just a collection used in the demo. Look forward to hearing from you.

Henry Minute Do not read medical books! You could die of a misprint. - Mark Twain Girl: (staring) "Why do you need an icy cucumber?" “I want to report a fraud. The government is lying to us all.”

bwood2020

Looking into this now...

bwood2020

Hi Henry, have a good weekend? I copied the code into two forms but I'm getting an error in the collection code you sent over. The errors I'm getting are: 1. expected { 2. Invalid token '>' in class, struct, or interface member declaration. The error occurs at: public class FieldMappingDictionary : Dictionary> I placed this code outside the public partial class ListEditorForm : Form. Should I place this code somewhere else? Also, looks like I have a couple of things coming down the pipe today so I may be fairly busy today. Just want you to know incase you don't hear back from me until later today. Thank you, Brenton Brenton

Henry Minute

Yes thanks, very restful. I am a silly boy. The errors are because in the reply box if you paste a < the editor replaces it with the html equivalent and the same with >. If you replace all the '& gt;' with > and '& lt;' with <. all should be well.

Henry Minute Do not read medical books! You could die of a misprint. - Mark Twain Girl: (staring) "Why do you need an icy cucumber?" “I want to report a fraud. The government is lying to us all.”

bwood2020

Sorry Henry, That is what I have and is giving the error. There are no '& gt;' or '& lt;' in the code. That must have happend when I copied and paste it into the reply. The error is occuring at public class FieldMappingDictionary : Dictionary>. I tried Dictionary <string, string> but it didn't work.

Henry Minute

Here it is again. This time I'll try to paste it properly. :) <pre> public class FieldMappingDictionary : Dictionary<string, List<string>> { public void Add(string key, string value) { // if the key is already in the list if (base.Keys.Contains(key)) { // only do it if not already there if (!base[key].Contains(value)) { // add the new value base[key].Add(value); } } else { // if the key ain't there, add it and a new values list List<string> list = new List<string>(); list.Add(value); base.Add(key, list); } } } </pre>

Henry Minute Do not read medical books! You could die of a misprint. - Mark Twain Girl: (staring) "Why do you need an icy cucumber?

bwood2020

Hi Henry, Almost there! I have one more problem. I am getting the error: 'System.Collections.Generic.Dictionary<string,System.Collections.Generic.List<string>>.KeyCollection' does not contain a definition for 'Contains' This occurs on line 6: if (base.Keys.Contains(key))

Henry Minute

I keep forgetting that you are using VS2005. Slight modification: <pre> public class FieldMappingDictionary : Dictionary<string, List<string>> { public void Add(string key, string value) { // if the key is already in the list if (this.KeysContains(key)) // <================= Modified Line { // only do it if not already there if (!base[key].Contains(value)) { // add the new value base[key].Add(value); } } else { // if the key ain't there, add it and a new values list List<string> list = new List<string>(); list.Add(value); base.Add(key, list); } } public bool KeysContains(string key) // <=========== New Method, just iterates over keys collection, returns true if

Henry Minute

Incidentally I keep forgetting this. You could save one step in your overall scheme, if loading the modified data into Excel is not a requirement. SSIS can read XML directly, and both DataSet and DataTable have a method called WriteXML, which believe it, or not, writes their data (and/or schema) to an XML file. As I said, if the Excel step is not a requirement, simply write the data to an XML file ready for SSIS.

Henry Minute Do not read medical books! You could die of a misprint. - Mark Twain Girl: (staring) "Why do you need an icy cucumber?" “I want to report a fraud. The government is lying to us all.”

bwood2020

Hi Henry, Looks like I have added all the code I need and the code compiles without warnings but the dgv doesn't get populated. I belive the only place I needed to add code too is here. If I am wrong then please advise further. private void ProcessMods() { // Create a copy of original table structure with // standardized column names** // load original file data into it // then do a series of updates using the docsDictionary, and the // other Dictionaries // STEP THROUGH THIS TO WATCH UPDATE STATEMENT BUILDING StringBuilder selectBuilder = null; foreach (string key in this.docsDictionary.Keys) { foreach (string val in this.docsDictionary[key]) { selectBuilder = new StringBuilder(); selectBuilder.Append("UPDATE TestData SET Documentation = "); selectBuilder.Append(key); selectBuilder.Append(" WHERE Documentation = "); selectBuilder.Append(val); str

Henry Minute

Strictly speaking ProcessMods() was intended merely, to create a copy of the table containing client-data but with your standard column names (See the comments at start of the method). I have left that bit for you to do as I am not sure about the best method for that process. Then it should process all the updates retrieved from MappingForm. You could fill the grid during that operation, but it would slow it down enormously, although it would show progress. The alternative would be to show the modifications after they are completed. In which case your dgv filling code should either be the very last thing in ProcessMods(), or immediately after the call to ProcessMods() in the MappingForm_Closed event handler (this would be my preference). For ProcessMods() the parts left to be done are, as mentioned above, copying the data to a new table with proper column names (incidentally I suggested copying so that the original data remains intact, in case of accidents. :) ), and this bit:

// execute the query here
// you know OleDbConnection, OleDbcommand etc.
// then go round for next mod

which is immediately above your new dgv fill code.

bwood2020 wrote:

Do I need to add code for a ShowDialog and capture the full path of the file?

Yes, for the production version, you probably would. Putting the test data in the debug folder was simply for convenience for what is a demo of a concept. If you stepped through the query building bit, I hope that you could see that for each of your standardised pieces of data the method builds an update query for each of the versions the client has used. It might turn out that using a query is not the best way to perform this operation, but the point of the exercise is to show that the data required to do the mods, is in a format which will enable the changes to be done fairly easily. I am currently looking at methods for copying the client data into a table with standard column names. I'll be back with you shortly. Of course, if you already know how to do this, let me know.

Henry Minute Do not read medical books! You could die of a misprint. - Mark Twain Girl: (staring) "Why do you need an icy cucumber?" “I want to report a fraud. The government is lying to us all.”

Henry Minute

Just when you thought it was safe to ......... :-D Some mods to the first form, I am posting the whole thing, because there are some renames, as well as some new methods and fields:

	List standardList = new List();
	Dictionary clientHeaders = new Dictionary();
	Dictionary standardHeaders = new Dictionary();
	DataSet testDataSet = null;
	DataTable headerTable = null;
	DataTable clientDataTable = null;
	DataTable standardDataTable = null;
	MappingForm mappingForm = null;
	readonly string dataFile = "TestData.csv";

	FieldMappingDictionary docsDictionary = null;

	public ListEditorForm()
	{
		InitializeComponent();
		InitStandardList();
	}

	private void InitStandardList()
	{
		standardList.AddRange(new string\[\] { "Property", "Offer", "Documentation", "Figures", "Guarantee" });
	}

	private void ProcessMods()
	{
		// Create a copy of original table structure with
		// standardized column names\*\*
		// load original file data into it
		this.GetClientData();
		this.CreateStandardTable();

		// then do a series of updates using the docsDictionary, and the
		// other Dictionaries
		// STEP THROUGH THIS TO WATCH UPDATE STATEMENT BUILDING
		//StringBuilder selectBuilder = null;
		foreach (string key in this.docsDictionary.Keys)
		{
			foreach (string val in this.docsDictionary\[key\])
			{
				//selectBuilder = new StringBuilder();
				//selectBuilder.Append("UPDATE  SET Documentation = ");
				//selectBuilder.Append(key);
				//selectBuilder.Append(" WHERE Documentation = ");
				//selectBuilder.Append(val);

				//string updateQuery = selectBuilder.ToString();

				// execute the query here
				// you know OleDbConnection, OleDbcommand etc.
				// then go round for next mod
				foreach (DataRow row in this.standardDataTable.Rows)
				{
					if (row\["Documentation"\].ToString() == val)
					{
						row\["Documentation"\] = key;
					}
				}
			}
			// go round for next key
		}

		// then do same for next dictionary
	}

	private void MakeHeaderDictionaries()
	{
		this.clientHeaders = this.MakeHeaderDictionary();
		this.standardHeaders = this.MakeStandardHeaderDictionary();
	}

	private Dictionary MakeStandardHeaderDictionary()
	{
		Dictionary result = new Dictionary();
		foreach (DataRow row in this.headerTable.Rows)
		{
			result.A

Henry Minute

If I had more than two brain cells to rub together, I would have written this:

	void MappingForm\_Closed(object sender, FormClosingEventArgs e)
	{
		this.docsDictionary = this.MappingForm.DocumentsDictionary;
		// get rest of dictionaries here

		this.ProcessMods();

		this.testDataSet.Tables\["ClientData"\].WriteXml("ClientTestData.xml", XmlWriteMode.WriteSchema); // <==== new
		this.testDataSet.Tables\["StandardData"\].WriteXml("StandardTestData.xml", XmlWriteMode.WriteSchema); // <== filename changed
	}

This should make it easier to compare unmodified and modified data. You should also note that the column names have been modified in the StandardTestData.xml version.

Henry Minute Do not read medical books! You could die of a misprint. - Mark Twain Girl: (staring) "Why do you need an icy cucumber?" “I want to report a fraud. The government is lying to us all.”

bwood2020

Henry, This is great! Very well organized and I like the idea of having the ability to contain the integrity of the original data set. I also like the idea of outputting to an xml file as well as comparing both the original data set to the standardized data set. I did have to modify some of the code you sent over. I had to add <string> to List and <string, string> to the Dictionaries. Let me know if this is not correct and I will go back through and make the recommended changes. I'm still having problems populating the dgv on form 1. Maybe it's that I have not added some functionality to it. On Form 1 I added a dgv and a button name dataGridView1 and btnGetValue. On Form 2 I added a dgv and a button named dgvDocumentation and btnOK. Am I forgetting anything? I have read through the code and it compiles but just can't pinpoint what's going on. You’re the man Henry!!!

Henry Minute

bwood2020 wrote:

I'm still having problems populating the dgv on form 1. Maybe it's that I have not added some functionality to it. On Form 1 I added a dgv and a button name dataGridView1 and btnGetValue. On Form 2 I added a dgv and a button named dgvDocumentation and btnOK. Am I forgetting anything? I have read through the code and it compiles but just can't pinpoint what's going on.

That sounds right. I'll go through my designer code to see if I've forgotten to tell you something obvious.

Henry Minute Do not read medical books! You could die of a misprint. - Mark Twain Girl: (staring) "Why do you need an icy cucumber?" “I want to report a fraud. The government is lying to us all.”