Multiple forms and datagridviews

[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.”

[Henry Minute]

Er.................. I did tell you that I had added two dgv columns, in the designer, didn't I? No, you say! ahem:

	private void InitializeComponent()
	{
		this.components = new System.ComponentModel.Container();
		this.dataGridView1 = new System.Windows.Forms.DataGridView();
		this.btnGetValue = new System.Windows.Forms.Button();
		this.clientColumn = new System.Windows.Forms.DataGridViewTextBoxColumn();
		this.standardColumn = new System.Windows.Forms.DataGridViewComboBoxColumn();
		this.headersBindingSource = new System.Windows.Forms.BindingSource(this.components);
		((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).BeginInit();
		((System.ComponentModel.ISupportInitialize)(this.headersBindingSource)).BeginInit();
		this.SuspendLayout();
		// 
		// dataGridView1
		// 
		this.dataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
		this.dataGridView1.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn\[\] {
        this.clientColumn,
        this.standardColumn});
		this.dataGridView1.Location = new System.Drawing.Point(12, 12);
		this.dataGridView1.Name = "dataGridView1";
		this.dataGridView1.Size = new System.Drawing.Size(284, 171);
		this.dataGridView1.TabIndex = 0;
		// 
		// btnGetValue
		// 
		this.btnGetValue.Location = new System.Drawing.Point(154, 236);
		this.btnGetValue.Name = "btnGetValue";
		this.btnGetValue.Size = new System.Drawing.Size(75, 23);
		this.btnGetValue.TabIndex = 1;
		this.btnGetValue.Text = "Value";
		this.btnGetValue.UseVisualStyleBackColor = true;
		this.btnGetValue.Click += new System.EventHandler(this.btnGetValue\_Click);
		// 
		// clientColumn
		// 
		this.clientColumn.HeaderText = "Client Header";
		this.clientColumn.Name = "clientColumn";
		// 
		// standardColumn
		// 
		this.standardColumn.HeaderText = "Standard Header";
		this.standardColumn.Name = "standardColumn";
		// 
		// ListEditorForm
		// 
		this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 14F);
		this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
		this.ClientSize = new System.Drawing.Size(422, 288);
		this.Controls.Add(this.btnGetValue);
		this.Controls.Add(this.dataGridView1);
		this.Name = "ListEditorForm";
		this.Text = "List Editor";
		this.Load += new System.EventHandler(this.ListEditorForm\_Load);
		((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).EndInit();
		((System

[bwood2020]

Ha-ha, you have a very good sense of humor. It makes it more fun and adds to my dull and busy day. You are correct sir. You did have that. I am looking through Form 2 and I see I need to add something else to get this to work. One down and one to go. I will follow up with you tomorrow. Thanks again Henry and have a good night!

[bwood2020]

Hi Henry, I was extremely busy yesterday but I was able to work on this demo for about an hour. As it turns out I am having difficulties getting the second form to work. I looked through the code again and saw that I was missing a combobox so I added that to the dgv; however this didn't fix the issue. Can you send the designer code for the second form when you get a chance please? Thank you, Brenton

[bwood2020]

Hi Henry, Thank you for sending me the demo. Even though I was not able to get it to work, I was able to get my app working by dissecting the code you wrote. I'm sorry I caused you frustration and thank you again for helping me on this. I will close this out now and give you the rating you deserve. Thanks again, Brenton