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Unity3D - How to change color for ItemLabel in DropDown

I am using a DropDown element in Unity,
in my code I disable some choices if the requirements are not met with:
var toogles = dropDownList.GetComponentsInChildren<Toggle>(true);
toogles[index].interactable = enable;
I also want to change the color of the ItemLabel text for the disabled toggles,
I tried:
var mylabel = dropDownList.GetComponentsInChildren<Text>(true);
mylabel[index].color = Color.red;
but doesn´t work, I somehow need to store that ItemLabel in a variable that is created under Dropdown/Template/Item/ItemLabel
I tried to create a public Text where I drag & dropped the ItemLabel that is created under template, but since its not the exact Text that gets created, its only a template, it didnt work.
Anybody knows how to access that ItemLabel of the DropDown?
EDIT:
I got this far:
if(toogles[i].interactable == false)
{
_dropdown.itemText.color = Color.red;
}
but dont know how to add the indexes, so only some of the items will be Red

I was able to find and iterate through the itemLabels with this code:
var myLabels = GameObject.FindGameObjectsWithTag("ItemLabel");
var objectCount = myLabels.Length;
Debug.Log("Object count:" + objectCount);
Text[] myItemLabels = new Text[6];
int k = 0;
foreach (var obj in myLabels)
{
myItemLabels[k] = obj.GetComponent<Text>();
k++;
}

Dynamic button-C#

i have buttons this buttons for categories i want when click in this buttons i want to get rows from database products table and get two data product name and price and set it those values into dynamic buttons in windows application notes i have set location properities for button such like flowLayoutPanel
i have this code
private void btnhotdrink_Click_1(object sender, EventArgs e)
{
//int StartPositition = 100;
//int EndPosition = 10;
DataTable dt = new DataTable();
dt =clsprdcat.GET_HOTDRINK_CATEGORY();
for(int i=0; i < dt.Rows.Count; i++)
{
for (int s=0; s < dt.Columns[4]; s++)
{
Button l = addbuttons(i,s);
flowLayoutPanel1.Controls.Add(l);
//EndPosition +=70;
}
}
}
Button addbuttons(int i)
{
Button l = new Button();
l.Name = "Name" + l.ToString();
l.Text = "label" + l.ToString();
l.ForeColor = Color.White;
l.BackColor = Color.Green;
l.Font = new Font("Serif", 24, FontStyle.Bold);
l.Width = 170;
l.Height = 80;
//l.Location = new Point(start, end);
l.TextAlign = ContentAlignment.MiddleCenter;
l.Margin = new Padding(5);
return l;
}
How Can i Do this

All Buttons are inherently dynamically created at runtime. The Windows Forms Designer works via partial classes: You work on one part. The designer on the other (designer.cs). And at compile time the Designers code is executed by calling "InitializeComponents()" in the Constructor. It can only do exactly the same things you can do.
If you need help with creating buttons yourself, you can always look into the Designer part. Just do take care not to change anything in that part. This System only works because the designer is exclusively writing in the file and compilation/loading of a Project is prone to seizing up if you did manual changes.
As you wrote it right now, this code will create dt.Rows.Count buttons at the same locaiton. Usually the Button creation code it needs access to the loop variable, to adapt the positions of each consequtive element.. Personally I prefer to leave positioning of Elements as much to automatics as possible. These designs simply adapt better to changes in resolution and window size.

User Control not Adding to TableLayoutPanel at Runtime

I have a TableLayoutPanel on a form which has 8 columns and 8 rows. I'm trying to populate this table from a list of a user controls which each contain three labels. When I run the app, I can see it has been populated, but looking at the actual form, it is empty.
I've tried replacing the control with just a label, and they show up fine, it's just when I try to use the user control that it doesn't work.
This code runs in the Load method and generates a list of GridSquareModel, which is used to populate the user control. Each model has an X and Y position which relates to their cell on the table panel.
var startup = new StartupForm();
if (startup.ShowDialog() == DialogResult.OK)
{
var grid = new List<GridSquareModel>();
for (int i = 0; i < 64; i++)
{
Position pos = new Position();
pos.X = i % 8;
pos.Y = i / 8;
grid.Add(new GridSquareModel(pos));
}
RenderGrid(grid);
}
else
{
Application.Exit();
}
This method generates a GridSquareControl for every GridSquareModel in the list. The X and Y value in the position determines which cell they are added to.
private void RenderGrid(List<GridSquareModel> grid)
{
UIGrid.Clear();
GridTable.Controls.Clear();
foreach (var item in grid)
{
var control = new GridSquareControl(item)
{
Dock = DockStyle.Fill
};
GridTable.Controls.Add(control, item.Position.X, item.Position.Y);
//GridTable.Controls.Add(new Label
//{
// Text = "TEST"
//}, item.Position.X + 1, item.Position.Y + 1);
}
}
I have commented my attempt to replace the GridSquareModel with a Label, which worked. This should produce a table containing 64 controls but once it is loaded the table appears empty.

I'm an idiot. I created a constructor for GridSquareControl but it did not include the InitializeComponent method, so obviously it was not rendered. All is working as expected now.

How to assign value to text box control inside the table column in C# coding file?

I am creating asp.net web form. in that i am creating dynamic tables in which particular column is numeric text box control.
i don't know how to assign and get values from the text box control.. my coding as follow..
for (int i = 0; i < my_DataTable.Rows.Count; i++)
{
HtmlTableRow _Row = new HtmlTableRow();
HtmlTableCell Col = new HtmlTableCell();
Col.InnerText = my_DataTable.Rows[i]["itmCode"].ToString();
_Row.Controls.Add(Col);
Col = new HtmlTableCell();
_Row.Controls.Add(Col);
Col.InnerHtml = "<input type='number' value='0'>";
_Row.Controls.Add(Col);
my_Table.Rows.Add(_Row);
}
In a paricular method, i need to assign the value to the text box control also needs to get the value existing value.. so i try follow as below
var no_1 = my_Table.Rows[0].Cells[1].InnerText;
If i check the no_1, it has the textbox, but i don't know how to access the current value and assign new value..
can anyone help me how to achieve this..

One thing you have to keep in mind while working with Dynamic Controls is that whenever a postback has occurred you will lose the dynamically created controls(as the postback calls the Page_load() event so if you don't have them at the load event they will not be generated and hence will not be displayed.). So, it is always better to re-render the controls in the load event.
So, in order to get the value of the dynamically assigned controls (either HTML or Asp.net) here is how i would do that.
First, create a holder which will be used to store the controls in the page either with runat="server"(So, you can access that control in the backend). In your case, that control is my_Table. Then use the Session/ViewState to keep a track of all the created dynamic controls which can be used re-render the controls with their values as:
To add a new control in the page it would be like this:
var cnt = _findRelated("txtDynamic") + 1; //for all the dynamic text boxes i am using the prefix of txtDynamic just to keep SOC.
var nId = $"txtDynamic-{cnt}";
var _ctrl = new HtmlInputText("Integer")
{
Name = nId,
ID = nId,
//Value="Default Value" //uncomment to assign a default value
};
_ctrl.Attributes.Add("runat", "server");
var row = new System.Web.UI.HtmlControls.HtmlTableRow();
var newCell = new HtmlTableCell();
newCell.Controls.Add(_ctrl);
row.Cells.Add(newCell);
my_Table.Rows.Add(row);
Session.Add(cnt.ToString(), _ctrl); //here i am using session to manage the controls but you can also use the ViewState
In the above code i am using HtmlInputText to generate an <input type="number"></input> with it's constructor taking the type string more can be read at:HtmlInputText.
The _findRelated() method is used to get the number of dynamic text controls appended to the Form. It is defined as:
private int _findRelated(string prefix)
{
string reqstr = Request.Form.ToString();
return ((reqstr.Length - reqstr.Replace(prefix, "").Length) / prefix.Length);
}
To set the value of the dynamically added control we can do something like this(if not assigned at the creation):
var cell = my_Table.Rows[_myTable.Rows.Count-1].cells[0]; //here i have assumed it is in the last row and in the first cell you can change the index to be anything.
var txtDynamic = cell.Controls.OfType<HtmlInputText>().FirstOrDefault();//getting the control
txtDynamic.Value = "<Some thing new>"; //setting the value
Now, to get the assigned the value:
var cell = my_Table.Rows[_myTable.Rows.Count-1].cells[0]; //here i have assumed it is in the last row and in the first cell you can change the index to be anything.
var txtDynamic = cell.Controls.OfType<HtmlInputText>().FirstOrDefault();//getting the control
//now use the .Value property of the control to get the value as:
var nValue = txtDynamic.Value;
And as we know the dynamically added controls will be lost on the postback event then we can create a method which will use the controls stored in the Session and re-render them with their values as:
private void _renderControls()
{
try
{
if (Session.Count > 0)
{
for (int k = 0; k < Session.Count; k++)
{
if (Session[k] != null)
{
var _ctrl = new HtmlInputText("Integer") //you can make it dynamic to add different types of input control
{
Name = ((HtmlInputText)Session[k]).ID,
ID = ((HtmlInputText)Session[k]).ID,
Value = ((HtmlInputText)Session[k]).Value
};
if (_ctrl != null)
{
_ctrl.Attributes.Add("runat", "server");
var row = new System.Web.UI.HtmlControls.HtmlTableRow();
var newCell = new HtmlTableCell();
newCell.Controls.Add(_ctrl);
row.Cells.Add(newCell);
my_Table.Rows.Add(row);
}
}
}
}
}
catch (Exception ex)
{
throw ex;
}
}
Now, let's modify the Page_load() event to call this method on every postback as:
protected void Page_Load(object sender, EventArgs e)
{
if (IsPostBack)
{
_renderDynamic(); // this method will be called if there is an postback event to re-render the dynamic controls
}
}
Note:
This is just a sample(there can be a lot better approaches out there).
I have used HtmlInputText with property as Integer to create ainput[type="number"].

LayoutGrid SetRow and SetColumn not working as intended

I have code that creates a button for each object in a list. When each object is created it is given a name that corresponds to the row and column (i.e. name = row1col2). Each button is generated dynamically, added to the grid and then the row/column are set. At a later time I need to gather the "selected" button data so I can perform actions on the data they represent. When I attempt to get the control data from the buttons everything is fine, except for the grid row/column data. It remains the same for all of the selected rows and columns in a grid.
Creating buttons:
for (int i = 1; i < row.StackCount+1; i++)
{
//create button for the column
stackButton = new Button();
stackButton.Height = ((newRow.Height - 2));
stackButton.Width = ((newRow.Width / row.StackCount) - 2);
stackButton.Background = new SolidColorBrush(Colors.White);
//add the button border
stackButton.BorderBrush = new SolidColorBrush(Colors.Black);
stackButton.BorderThickness = new Thickness(1);
stackButton.Style = Application.Current.Resources["flatButton"] as Style;
//add the button name
stackButton.Name = "Row" + row.LineNumber + "Col" + (i - 1).ToString();
//add the event handler to the button
stackButton.Click += new RoutedEventHandler(stackButton_Click);
//add a new column
newRow.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(newRow.Width, GridUnitType.Star) });
//put the button into the grid
newRow.Children.Add(stackButton);
Grid.SetRow(stackButton, 0);
Grid.SetColumn(stackButton, i-1);
}
Getting the Button data back
g = (Grid)b.Child;
foreach (Button currentButton in g.Children)
{
if (((SolidColorBrush)currentButton.Background).Color == Colors.Gray)
{
//create a stack object
buttonData.StartDate = DateTime.Now;
buttonData.LotNumber = LotDisplay.Text;
buttonData.RoomID = SilverGlobals.CurrentRoom.RoomID;
buttonData.RoomCol = Grid.GetColumn(currentButton);
buttonData.RoomRow = Grid.GetRow(currentButton);
buttonData.TrayCount = int.Parse(currentButton.Content.ToString());
buttonData.Status = 0;
//add stack object to list of stack objects
stacks.Add(buttonData);
}
}
I know this must be something small I am missing. Anyone got any ideas?

Although the comment in your second section of code says:
//create a stack object
you don't actually create a new stack object so it is simply overwriting the single instance of buttonData on each iteration. The values for row and column that you see at the end are the last iteration's values.
The net effect is that stacks is a collection of all the same instance of an object instead of a collection of separate instances.

This is just a shot in the dark, but based on this question and this question, it might be that you need to set the Row and Column properties before you add the button to its parent - something like this:
//put the button into the grid
Grid.SetRow(stackButton, 0);
Grid.SetColumn(stackButton, i-1);
newRow.Children.Add(stackButton);