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Where is data updated in a DataGridView?

I am creating a tab page entirley programatically from a button press in the root page of a tabbed control. At present all the page initialisation takes place in the button click method. After all the instantiation, data capture from file and so on, I finally want to adjust the column widths in the data grid view, so that all the row data appears without having to have horizontal scroll bars. With the help of all your contributors I have managed to get it all working but the last step. Running at full speed it appears the DataGridView is accessed before the data load from the table is complete as it fails with an exception because the count derived from RegistersGrid.ColumnCount (local variable l) is zero. It all works fine if I step through the code. I am assuming that I need to put a Mutex of some form to wait for the transfer to complete, but I can't work out where that is taking place in order to reset the flag! If someone can point me in the right direction or if there is better more structured way to approach this I would deeply appreciate the help :-)
I have included all the code in the method just in case, I am afraid I date back a long way so if this looks like the awkward child of assembler,pascal and c with a little c# thrown in, my apologies....it's my age :-)
private void AddModuleButton_Click(object sender, EventArgs e)
{
string ModuleID = null;
string ModuleTypeFileNumber = null;
string ModuleType = null;
int TabID = 0;
openFileDialog1.Filter = "Text Files (.txt)|*.txt";
DialogResult result = openFileDialog1.ShowDialog();
if (result == DialogResult.OK)
using (StreamReader reader = new StreamReader(openFileDialog1.FileName))
{
string newline;
if ((newline = reader.ReadLine()) != null)
{
string[] values = newline.Split((char)9);
ModuleTypeFileNumber = values[1];
}
if ((newline = reader.ReadLine()) != null)
{
string[] values = newline.Split();
ModuleID = values[0];
ModuleType = values[1];
}
bool AbsorbLines = true;
while (AbsorbLines && ((newline = reader.ReadLine()) != null))
{
string[] values = newline.Split();
if (values[0] == "Readings") AbsorbLines = false;
}
string[] columnnames = { "Summary", "access", "register", "Module & Name", "Value", "unit", "type", "Res" };
string[] columntypes = { "System.Boolean", "System.String", "System.Int32", "System.String", "System.Int32", "System.String", "System.String", "System.String" };
int[] columnwidth = { 1,2,3,35,10,5,5,5 };
DataTable dt = new DataTable();
for(int i =0; i < columnnames.Length; i++)
{
DataColumn colString = new DataColumn(columnnames[i]);
colString.DataType = System.Type.GetType(columntypes[i]);
dt.Columns.Add(colString);
}
while (ImportTable("Controls", reader.ReadLine(), dt, "RO")) { } // Import the "readings" section
while (ImportTable("Status bits", reader.ReadLine(), dt, "RW")) { } // Import the "controls" section
reader.Close();
registerTables.Add(ModuleID, dt);
// create a new tab page
TabPage page = new TabPage(ModuleID);
InterbusRegisters.TabPages.Add(page);
//
// tabPage1
//
Button ResizeButton = new Button();
Button RemoveButton = new Button();
Label VersionLabel = new Label();
Label SerialNolabel = new Label();
TextBox VersionNoTB = new TextBox();
TextBox SerialNoTB = new TextBox();
DataGridView RegistersGrid = new DataGridView();
//
// Set the properties of the DataGrid.
//
RegistersGrid.AccessibleName = ModuleID + "Grid";
RegistersGrid.Location = new System.Drawing.Point(3,29);
RegistersGrid.Width = page.Width - 6;
RegistersGrid.Height = page.Height - 29;
RegistersGrid.Anchor = (AnchorStyles.Top | AnchorStyles.Left);
RegistersGrid.DataSource = dt;
RegistersGrid.Dock = (DockStyle)2;
//
// RemoveButtonRegistersGrid
//
RemoveButton.BackColor = System.Drawing.Color.Red;
RemoveButton.Location = new System.Drawing.Point(3, 4);
RemoveButton.Name = "RemoveButton";
RemoveButton.Size = new System.Drawing.Size(75, 25);
RemoveButton.TabIndex = 0;
RemoveButton.Text = "Remove";
RemoveButton.UseVisualStyleBackColor = false;
RemoveButton.Click += new System.EventHandler(this.RemoveButton_Click);
//
// ResizeButton
//
ResizeButton.BackColor = System.Drawing.Color.DarkOrange;
ResizeButton.Location = new System.Drawing.Point(81, 4);
ResizeButton.Name = "ResizeButton";
ResizeButton.Size = new System.Drawing.Size(75, 25);
ResizeButton.TabIndex = 6;
ResizeButton.Text = "Resize";
ResizeButton.UseVisualStyleBackColor = false;
ResizeButton.Click += new System.EventHandler(this.ResizeButton_Click);
//
// SerialNolabel
//
SerialNolabel.AutoSize = true;
SerialNolabel.Location = new System.Drawing.Point(159, 10);
SerialNolabel.Name = "SerialNolabel";
SerialNolabel.Size = new System.Drawing.Size(53, 13);
SerialNolabel.TabIndex = 4;
SerialNolabel.Text = "Serial No:";
//
// SerialNoTB
//
SerialNoTB.Location = new System.Drawing.Point(215, 7);
SerialNoTB.Name = "SerialNoTB";
SerialNoTB.Size = new System.Drawing.Size(100, 20);
SerialNoTB.TabIndex = 1;
//
// VersionLabel
//
VersionLabel.AutoSize = true;
VersionLabel.Location = new System.Drawing.Point(318, 10);
VersionLabel.Name = "VersionLabel";
VersionLabel.Size = new System.Drawing.Size(45, 13);
VersionLabel.TabIndex = 5;
VersionLabel.Text = "Version:";
//
// VersionTB
//
VersionNoTB.Location = new System.Drawing.Point(366, 7);
VersionNoTB.Name = "VersionTB";
VersionNoTB.Size = new System.Drawing.Size(100, 20);
VersionNoTB.TabIndex = 2;
page.Controls.Add(ResizeButton);
page.Controls.Add(RemoveButton);
page.Controls.Add(VersionLabel);
page.Controls.Add(VersionNoTB);
page.Controls.Add(SerialNolabel);
page.Controls.Add(SerialNoTB);
page.Controls.Add(RegistersGrid);
page.Location = new System.Drawing.Point(4, 22);
page.Size = new System.Drawing.Size(716, 554);
page.TabIndex = 1;
page.UseVisualStyleBackColor = true;
page.Update(); // the following code fails
int k = dt.Columns.Count;
int l = RegistersGrid.ColumnCount;
for (int j = 0; j <= RegistersGrid.ColumnCount - 1; j++)
RegistersGrid.Columns[j].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
RegistersGrid.Columns[3].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
//datagrid has calculated it's widths so we can store them
for (int i = 0; i <= RegistersGrid.ColumnCount - 1; i++)
{
int colw = RegistersGrid.Columns[i].Width; //store autosized widths
RegistersGrid.Columns[i].AutoSizeMode = DataGridViewAutoSizeColumnMode.None; //remove autosizing
RegistersGrid.Columns[i].Width = colw; //set width to calculated by autosize
}
}
}

New line in FlowLayoutPanel

I am using following code to generate controls dynamically inside a FlowLayoutPanel (win forms - c#). I want to add line break after completion of inner foreach.
var fullText = textBox1.Text;
List<string> listPoints = fullText.Split('#').ToList();
foreach (var listPoint in listPoints)
{
if (listPoint.Contains('^'))
{
var listTextboxes = listPoint.Split('^');
int textBoxCount = listTextboxes.Count();
int index = 1;
foreach (var listTextbox in listTextboxes)
{
CheckBox ck = new CheckBox();
ck.Text = listTextbox;
ck.AutoSize = true;
ck.CheckStateChanged += new EventHandler(this.CheckBox_CheckedChanged);
flowLayoutPanel1.Controls.Add(ck);
if (index < textBoxCount)
{
TextBox tb = new TextBox();
tb.AutoSize = true;
tb.TextChanged += new EventHandler(this.TextBox_TextChanged);
flowLayoutPanel1.Controls.Add(tb);
}
index++;
}
// code for New line break
}
else
{
CheckBox ck = new CheckBox();
ck.Text = listPoint;
ck.AutoSize = true;
ck.CheckStateChanged += new EventHandler(this.CheckBox_CheckedChanged);
flowLayoutPanel1.Controls.Add(ck);
flowLayoutPanel1.
}

Use the SetFlowBreak method:
Control lastControl = null;
if (listPoint.Contains('^')) {
var listTextboxes = listPoint.Split('^');
int textBoxCount = listTextboxes.Count();
int index = 1;
foreach (var listTextbox in listTextboxes) {
CheckBox ck = new CheckBox();
ck.Text = listTextbox;
ck.AutoSize = true;
ck.CheckStateChanged += new EventHandler(this.CheckBox_CheckedChanged);
flowLayoutPanel1.Controls.Add(ck);
if (index < textBoxCount) {
TextBox tb = new TextBox();
tb.AutoSize = true;
tb.TextChanged += new EventHandler(this.TextBox_TextChanged);
flowLayoutPanel1.Controls.Add(tb);
lastControl = tb;
} else {
lastControl = ck;
}
index++;
}
if (lastControl != null) {
flowLayoutPanel1.SetFlowBreak(lastControl, true);
}

c# pass different variables to button onClick event

I would need different variables on button_Click event. For each button I need different billDetail and rowAmount values. Actually every button is giving the last values of the var Size.
I think is a easy problem but I'm doing this as hobby...please help me!
private void CashCounter_Load(object sender, EventArgs e)
{
var posXbutton = 120;
var posYbutton = 10;
var gapXbutton = 105;
var gapYbutton = 65;
var posXlabel = 5;
var posYlabel = 28;
var gapYlabel = 65;
using (var db = new GelatoProjectDBEntities())
{
#region working code
var items = (from x in db.ProductsLists
select new { x.Id, x.Product, x.Category, x.Size, x.Price, x.Market, x.Image }
).Where(x => x.Market == "Retail")
.ToArray();
var categories = (from x in items
select x.Category)
.Distinct();
foreach (var category in categories)
{
TabPage TabProduct = new TabPage(category);
TabProduct.BackColor = System.Drawing.Color.White;
tabControl1.TabPages.Add(TabProduct);
var products = (from i in items
where i.Category == category
select i.Product)
.Distinct()
.ToList();
foreach (var product in products)
{
string labelName = "label" + product;
var label = new Label();
label.AutoSize = false;
label.Location = new System.Drawing.Point(posXlabel, posYlabel);
label.Name = labelName;
label.Size = new System.Drawing.Size(110, 17);
label.TabIndex = 0;
label.Text = product;
label.RightToLeft = RightToLeft.Yes;
posYlabel = posYlabel + gapYlabel;
TabProduct.Controls.Add(label);
var sizes = (from i in items
where i.Product == product
//select i.Size)
select new { i.Id, i.Product, i.Category, i.Size, i.Price, i.Market, i.Image })
.Distinct()
.ToList();
foreach (var size in sizes)
{
BillDetail = size.Size+" "+product;
BillTotal = "£ "+size.Price;
RowAmount = size.Price;
string buttonName = "button" + product;
var button = new Button();
button.Location = new Point(posXbutton, posYbutton);
button.Name = buttonName;
button.Size = new Size(100, 50);
button.Text = size.Size;
button.BackColor = System.Drawing.Color.LightGray;
button.Click += new System.EventHandler(button_Click);
posXbutton = posXbutton + gapXbutton;
TabProduct.Controls.Add(button);
}
posXbutton = 120;
posYbutton = posYbutton + gapYbutton;
}
posXbutton = 120;
posYbutton = 10;
gapXbutton = 105;
gapYbutton = 65;
posXlabel = 5;
posYlabel = 28;
gapYlabel = 65;
}
}
#endregion
}
private void button_Click (object sender, EventArgs e)
{
ListViewItem NewBillProduct = new ListViewItem(BillDetail);
NewBillProduct.SubItems.Add("£");
NewBillProduct.SubItems.Add(RowAmount.ToString("F"));
listViewBillDetail.Items.Add(NewBillProduct);
BillTotalAmount = BillTotalAmount + double.Parse(RowAmount.ToString("F"));
ItemsTotal = ItemsTotal + 1;
textBoxTotal.Text = (BillTotalAmount.ToString("C", nfi)).ToString();
textBoxItems.Text = (ItemsTotal).ToString();
}

You can use Tag property of Button to store related Size object there:
button.Tag = size;
Then in click event handler you can retrieve this object:
private void button_Click (object sender, EventArgs e)
{
var button = (Button)sender;
var size = (Size)button.Tag;
// use size.Size or size.Price
// etc
}
Note: You can store several objects in Tag if you'll put them into array or list.

C# How to remove dynamically created controls in switch

ok so in my switch(comboBox1.SelectedIndex) in case 1 it creates some Labels and comboBoxes dynamically and adds them to tabPage1, but I want those dynamically created controls to be removed when case 2 is selected
public void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
{
switch (comboBox2.SelectedIndex)
{
case 0:
{
//do nothing.
break;
}
case 1:
{
Label label16 = new Label();
tabPage1.Controls.Add(label16);
label16.Left = 465;
label16.Top = 111;
label16.Text = "Time:";
label16.Size = new Size(60, 13);
ComboBox comboBox13 = new ComboBox();
tabPage1.Controls.Add(comboBox13);
comboBox13.Left = 533;
comboBox13.Top = 108;
comboBox13.Size = new Size(104, 21);
comboBox13.DropDownStyle = ComboBoxStyle.DropDownList;
comboBox13.DisplayMember = "Text";
comboBox13.ValueMember = "Value";
var ComboBox13Items = new[] {
new { Text = "1 Second", Value = "1" },
new { Text = "2.5 Seconds", Value = "2.5" },
new { Text = "5 Seconds", Value = "5" },
new { Text = "7.5 Seconds", Value = "7.5" },
new { Text = "10 Seconds", Value = "10" }
};
comboBox13.DataSource = ComboBox13Items;
break;
}
case 2:
{
foreach (Control TimeLabel in tabPage1.Controls.OfType<Controls>())
{
if (TimeLabel.Name == "label16")
tabPage1.Controls.Remove(TimeLabel);
}
foreach (Control TimeComboBox in tabPage1.Controls.OfType<Controls>())
{
if (TimeComboBox.Name == "comboBox13")
tabPage1.Controls.Remove(TimeComboBox);
}
break;
}
I also tried changing OfType<Controls> to OfType<Label> and OfType<ComboBox>, still no luck :/

Label label16 = new Label();
tabPage1.Controls.Add(label16);
label16.Left = 465;
label16.Top = 111;
label16.Text = "Time:";
label16.Size = new Size(60, 13);
Does not create a button called "label16" it creates an unnamed button.
you would need to add
labal16.Name = "label16";
Names should be unique, keep a counter or something if theres chance that more than one set would be added and use the counter to make a unique name.

How to set css properties to dynamically created table?

void GenerateSurvey(string AnketId, System.Web.UI.WebControls.PlaceHolder plch)
{
var db = new Xrm.XrmDataContext(Microsoft.Xrm.Client.CrmConnection.Parse(Utils.getXrmConnectionString(_PortalBrandHelper.BrandProxy.BrandDedicatedCrmOrgName)));
var AnketSoru = from p in db.new_survey_questions
orderby p.new_rank
select new { p.new_survey_questionid, p.new_question_text, p.new_question_type, p.new_rank, p.new_min_enumerator, p.new_max_enumerator };
HtmlTable tbl = new HtmlTable();
tbl.CellPadding = 2;
tbl.CellSpacing = 3;
HtmlTableRow r = new HtmlTableRow();
HtmlTableCell c = new HtmlTableCell();
c.InnerHtml = "<h3>İMMİB</h3>";
c.ColSpan = 2;
c.Align = "center";
r.Cells.Add(c);
tbl.Border = 1;
tbl.ID = "Survey_Inner";
tbl.Rows.Add(r);
c = new HtmlTableCell();
r = new HtmlTableRow();
c.ColSpan = 2;
c.InnerHtml = "<h4>EĞİTİM DEĞERLENDİRME FORMU</h4>";
c.Align = "center";
r.Cells.Add(c);
tbl.Rows.Add(r);
foreach (var item in AnketSoru)
{
r = new HtmlTableRow();
c = new HtmlTableCell();
c.InnerHtml = item.new_question_text.ToString();
r.Cells.Add(c);
switch (item.new_question_type.ToString())
{
case "2": //FreeText
c = new HtmlTableCell();
TxtFreeText = new TextBox();
TxtFreeText.ID = "Txt_" + item.new_survey_questionid.ToString();
TxtFreeText.TextMode = TextBoxMode.MultiLine;
TxtFreeText.Width = 300;
TxtFreeText.Height = 50;
TxtFreeText.EnableViewState = true;
c.Controls.Add(TxtFreeText);
break;
case "3": //CheckBox
c.ColSpan = 2;
var choises = from c1 in db.new_survey_question_choices
where c1.new_survey_questionid == item.new_survey_questionid
select c1;
ChkSecimler = new CheckBoxList();
ChkSecimler.ID = "Chkl_" + item.new_survey_questionid.ToString();
ChkSecimler.RepeatDirection = RepeatDirection.Horizontal;
ChkSecimler.RepeatColumns = 2;
foreach (var ck in choises)
{
LiSecim = new ListItem();
LiSecim.Text = ck.new_name;
ChkSecimler.Items.Add(LiSecim);
}
c.Controls.Add(ChkSecimler);
break;
case "4": //Enumeration ***RadioButton***
c = new HtmlTableCell();
RdSecimler = new RadioButtonList();
RdSecimler.ID = "Rdl_" + item.new_survey_questionid.ToString();
RdSecimler.RepeatDirection = RepeatDirection.Horizontal;
c.Align = "center";
for (int i = Convert.ToInt32(item.new_min_enumerator); i <= Convert.ToInt32(item.new_max_enumerator); i++)
{
LiSecim = new ListItem();
LiSecim.Text = i.ToString();
RdSecimler.Items.Add(LiSecim);
}
c.Controls.Add(RdSecimler);
break;
default:
break;
}
r.Cells.Add(c);
tbl.Rows.Add(r);
}
plch.Controls.Add(tbl);
}
I want to make that radiobuttons fit in that cell not centered but couldnt able to do it, how can i do it any help?

Simply add Attributes
HtmlTable tbl = new HtmlTable();
tbl.Attributes.Add("class","ClassName");

remove c.Align = "center"; and put these radiobuttons inside table with one row and n cells with width=100% to fit it in the parent cell

Is it possible to have it created inside a particular div?
You could then base all the classes on that div.
So lets say the table appears inside:
<div id="new-table"></div>
You could do your css definitions like this:
#new-table table{ }
#new-table tr{ }
#new-table td{text-align:left;}
Do you have a way of giving a unique class to the div with the radio buttons?