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Dynamically created controls in Page_Load()

I have a question regarding creating controls in runtime in ASP.NET 4.0. I'm building a application and in admin.aspx page I have multiple controls (DropDownLists) which are dynamically created with values from a Sql database.
I know that for having events fired for dynamically created controls, I have to create this controls in Page_Load() or in Page_Init().
My project has a Master Page, in which I have a 1 second timer which updates a clock. This timer event calls my admin.aspx Page_Load() function, so my method which creates dynamic controls it's called every 1 second - connection to database is made every one second, please look below to my code.
It's a good practice to do that? Can you please propose some ideas?
protected void Page_Load(object sender, EventArgs e)
{
_SinopticBackgroundColor = ConfigurationManager.AppSettings["SinopticBackgroundColor"];
panelContent.Style.Add("background-color", _SinopticBackgroundColor);
Control c = GetControlThatCausedPostBack(this);
if (c != null)
{
if (c.ID.Equals("btnManageCategory"))
hfPageManage.Value = "category";
else if (c.ID.Equals("btnManageDevices"))
hfPageManage.Value = "device";
}
if (hfPageManage.Value.Equals("category"))
{
cbTreeViewGroup.Visible = false;
UpdateSinopticCategoryManager(TreeView1.SelectedNode); //this is the functions which loads controls from database..
}
else if (hfPageManage.Value.Equals("device"))
{
cbTreeViewGroup.Visible = true;
}
else
{
cbTreeViewGroup.Visible = false;
}
if (!Page.IsPostBack)
{
LoadFunctions(); // loads some values from database into datatables
}
else
{
}
}
And here is the functions which creates controls
private void UpdateSinopticCategoryManager(TreeNode node = null)
{
if (node == null)
return;
DataTable categoriiDT = null;
using (var connection = new SqlConnection(Database.ConnectionString))
{
using (var command = connection.CreateCommand())
{
command.CommandText = "SELECT * FROM categories WHERE CategoryID = #CategoryID";
command.Parameters.Add("CategoryID", node.Value);
SqlDataAdapter ad = new SqlDataAdapter(command);
DataSet ds = new DataSet("CATEGORYPROPERTIES");
connection.Open();
ad.Fill(ds);
// verificam sa avem date
if (ds.Tables.Count <= 0)
return;
if (ds.Tables[0].Rows.Count <= 0)
return;
categoriiDT = ds.Tables[0];
}
}
// generate table
Table table = new Table();
table.Style.Add("position", "relative");
table.Style.Add("top", "20px");
table.Style.Add("margin-left", "20px");
table.BorderStyle = BorderStyle.Solid;
table.BorderWidth = 1;
// header
TableHeaderRow hr = new TableHeaderRow();
for (int i = 0; i < 2; i++)
{
TableHeaderCell hc = new TableHeaderCell();
if (i > 0)
{
hc.Text = "FUNCTION";
//hc.Width = 200;
}
else
{
hc.Width = 100;
}
hr.Cells.Add(hc);
}
table.Rows.Add(hr);
var inputs = (from a in categoriiDT.Columns.Cast<DataColumn>()
where a.ColumnName.ToLowerInvariant().Contains("input")
select a.ColumnName).ToArray();
if (inputs.Count() <= 0)
return;
//rows input
for (int i = 0; i < inputs.Count(); i++)
{
TableRow tableRow = new TableRow();
for (int j = 0; j < 2; j++)
{
TableCell cell = new TableCell();
if (j > 0)
{
// adaugare 2 dropdownlist
DropDownList categList = new DropDownList();
categList.SelectedIndexChanged += new EventHandler(categList_SelectedIndexChanged);
foreach (DataRow row in functionsCategories.Rows)
{
categList.Items.Add(new ListItem(row["FunctionCategoryName"].ToString(), row["FunctionCategoryID"].ToString()));
}
DropDownList funcList = new DropDownList();
int selF = 0, selC = 0;
for (int fi = 0; fi < functions.Rows.Count; fi++)// (DataRow row in functions.Rows)
{
funcList.Items.Add(new ListItem(functions.Rows[fi]["FunctionName"].ToString(), functions.Rows[fi]["FunctionID"].ToString()));
if (functions.Rows[fi]["FunctionID"].ToString() == categoriiDT.Rows[0][inputs[i]].ToString())
{
selF = fi;
selC = Int32.Parse(functions.Rows[fi]["FunctionCategoryID"].ToString());
}
}
funcList.SelectedIndex = selF;
categList.SelectedIndex = functionsCategories.Rows.IndexOf(
(from c in functionsCategories.AsEnumerable()
where c["FunctionCategoryID"].ToString().Equals(selC.ToString())
select c).FirstOrDefault());
cell.Controls.Add(categList);
cell.Controls.Add(funcList);
}
else
{
Label label = new Label();
label.Text = "INPUT " + i.ToString();
label.Style.Add("font-weight", "bold");
cell.Controls.Add(label);
}
tableRow.Cells.Add(cell);
}
table.Rows.Add(tableRow);
}
//rows output
for (int i = 0; i < 4; i++)
{
TableRow row = new TableRow();
for (int j = 0; j < 2; j++)
{
TableCell cell = new TableCell();
if (j > 0)
{
DropDownList list = new DropDownList();
list.Width = 200;
list.Items.AddRange(GetOutputFunctions());
list.BorderColor = Color.Goldenrod;
cell.Controls.Add(list);
}
else
{
Label label = new Label();
label.Text = "OUTPUT " + i.ToString();
label.Style.Add("font-weight", "bold");
cell.Controls.Add(label);
}
row.Cells.Add(cell);
}
table.Rows.Add(row);
}
// add table to panel
panelContent.Controls.Add(table);
}
It's about this: DropDownList categList = new DropDownList();

This may get answered more quickly and effectively in codereview https://codereview.stackexchange.com/

Cannot fire runtime radiobutton checkedchanged event inside linkbutton click event

I am trying to fire radiobutton checked changed event on linkbutton click event but instead it goes to the page load and the radiobutton checkedchanged event does not fires.
protected void Page_Load(object sender, EventArgs e)
{
string Query = "select Q101004,Q101005 from Q101 where Q101001<110000013";
DataTable dt = ExecuteDataset(Query).Tables[0];
ViewState["dt"] = dt;
Table t = new Table();
TableRow r = new TableRow();
t.Rows.Add(r);
TableCell c = new TableCell();
lnkbtn = new LinkButton();
r.Cells.Add(c);
lnkbtn.Text = "Click Here";
lnkbtn.Visible = true;
lnkbtn.CommandName = "Test";
lnkbtn.CommandArgument = "Hi";
lnkbtn.ID = "Hi";
PlaceHolder2.Controls.Add(lnkbtn);
for (int i = 0; i < dt.Rows.Count; i++)
{
rb = new RadioButton();
rb.AutoPostBack = true;
rb.ID = "m" +i;
rb.GroupName = "a";
rb.Text = dt.Rows[0][0].ToString();
CbxList = new CheckBoxList();
CbxList.ID = "Cbx"+i;
CbxList.Enabled = false;
CbxList.RepeatDirection = RepeatDirection.Horizontal;
CbxList.RepeatColumns = 2;
CbxList.CellPadding = 10;
CbxList.CellSpacing = 5;
CbxList.RepeatLayout = RepeatLayout.Table;
options = dt.Rows[0][1].ToString().Split('~');
PlaceHolder2.Controls.Add(new LiteralControl("<br/>"));
for (int j = 0; j < options.Length; j++)
{
CbxList.Items.Add(new ListItem(options[j], options[j]));
}
PlaceHolder2.Controls.Add(rb);
PlaceHolder2.Controls.Add(CbxList);
if (i ==0)
rb.CheckedChanged += new EventHandler(rb_CheckedChanged);
else
lnkbtn.Click += new EventHandler(lnkbtn_Click);
}
}
void lnkbtn_Click(object sender, EventArgs e)
{
DataTable dt = (DataTable)ViewState["dt"];
lnkbtn = (LinkButton)PlaceHolder2.FindControl("Hi");
string str=((LinkButton)sender).CommandArgument;
//lnkbtn.Enabled = true;
if (lnkbtn.ID == str)
{
rb = new RadioButton();
rb.AutoPostBack = true;
rb.ID = "m";
rb.GroupName = "a";
rb.Text = dt.Rows[0][0].ToString();
CbxList = new CheckBoxList();
CbxList.ID = "Cbx";
CbxList.Enabled = false;
CbxList.RepeatDirection = RepeatDirection.Horizontal;
CbxList.RepeatColumns = 2;
CbxList.CellPadding = 10;
CbxList.CellSpacing = 5;
CbxList.RepeatLayout = RepeatLayout.Table;
options = dt.Rows[0][1].ToString().Split('~');
PlaceHolder2.Controls.Add(new LiteralControl("<br/>"));
for (int i = 0; i < options.Length; i++)
{
CbxList.Items.Add(new ListItem(options[i], options[i]));
}
PlaceHolder2.Controls.Add(rb);
PlaceHolder2.Controls.Add(CbxList);
if (lnkbtn.CommandName == "Test")
{
rb.CheckedChanged += new EventHandler(rb_CheckedChanged);
}
}
}

Your code subscribes to the checked changed but does not invoke it.
If you want to do this, you could call the rb_CheckedChanged() method directly.

hope this helps....its working fine for me.
Just Modify your code with this code and You will be able to achieve your desired output
private void InitPage()
{
string a1, b,a2,b2;
_objSession = (ClsSession)Session["Login"];
ds = _objSession._DataSet;
dtAll = ds.Tables[3];
dr = dtAll.NewRow();
string str2 = (string)ViewState["str1"];
if (str2 != null)
{
string[] str3 = str2.Split('~');
a2 = str3[0];
b2 = str3[1];
}
else
{
a2 = "a0";
b2 = "b0";
}
str = (string)ViewState["str"];
if (str == null)
{
a1 = "a0";
b = "b";
}
else
{
string[] str1 = str.Split('~');
a1 = str1[0];
b = str1[1];
}
if (str==null)
{
for (int j = 0; j < dtAll.Rows.Count; j++)
{
Table t = new Table();
TableRow r = new TableRow();
t.Rows.Add(r);
TableCell c = new TableCell();
lnkbtn = new LinkButton();
r.Cells.Add(c);
lnkbtn.Text = (j + 1).ToString();
lnkbtn.Visible = true;
lnkbtn.CommandName = "Test";
lnkbtn.CommandArgument = "Hi" + j;
lnkbtn.ID = "Hi" + j;
lnkbtn.ForeColor = Color.Blue;
lnkbtn.Width = 30;
lnkbtn.Font.Bold = true;
lnkbtn.Font.Size = 14;
lnkbtn.Font.Underline = false;
lnkbtn.Click += new EventHandler(lnkbtn_Click);
c.Controls.Add(lnkbtn);
plcHdrLinkButton.Controls.Add(lnkbtn);
}
ViewState["a"] = 0;
}
if (str2 != null)
{
string[] str3 = str2.Split('~');
a2 = str3[0];
a1 = a2;
}
string resultString = Regex.Match(a1, #"\d+").Value;
int a = int.Parse(resultString);
ViewState["a"] = a;
plcHdrQuestion.Controls.Clear();
rb = new RadioButton();
rb.ID = "m" + a;
rb.AutoPostBack = true;
rb.GroupName = "a";
rb.Text = (a + 1) + "." + " " + dtAll.Rows[a][4].ToString();
CbxList = new CheckBoxList();
CbxList.ID = "Cbx" + a;
CbxList.Enabled = false;
CbxList.RepeatDirection = RepeatDirection.Horizontal;
CbxList.RepeatColumns = 2;
CbxList.CellPadding = 10;
CbxList.CellSpacing = 5;
CbxList.RepeatLayout = RepeatLayout.Table;
options = dtAll.Rows[a][5].ToString().Split('~');
plcHdrQuestion.Controls.Add(new LiteralControl("<br/>"));
for (int i = 0; i < options.Length; i++)
{
CbxList.Items.Add(new ListItem(options[i], options[i]));
}
plcHdrQuestion.Controls.Add(rb);
plcHdrQuestion.Controls.Add(CbxList);
rb.CheckedChanged += new EventHandler(lnkbtn_Click);
string st = (string)ViewState["str"];
ViewState["str1"] = st;
ViewState["str"] = null;
}
protected void lnkbtn_Click(object sender, EventArgs e)
{
Boolean _flag=true;
ds = _objSession._DataSet;
dt1 = ds.Tables[3];
dr = dt1.NewRow();
StringBuilder sb=new StringBuilder ();
for (int i = 0; i < dt1.Rows.Count; i++)
{
Cbx = (RadioButton)plcHdrQuestion.FindControl("m" + i);
Cbx1 = (CheckBoxList)plcHdrQuestion.FindControl("Cbx" + i);
if (Cbx != null)
{
if (Cbx.Checked == true)
{
Cbx1.Enabled = true;
_flag = false;
string st1 = (string)ViewState["st"];
string st="c";
if (st1 != null)
st = st1 + "~" + st;
ViewState["st"] = st;
st1 = (string)ViewState["st"];
sb.Append(st);
}
break;
}
}
int count=(sb.ToString().Count());
if (count>2)
{
_flag = true;
}
if ((lnkbtn.CommandName == "Test") && (_flag ==true))
{
for (int j = 0; j < dt1.Rows.Count; j++)
{
lnkbtn = (LinkButton)plcHdrLinkButton.FindControl("Hi" + j);
string str = ((LinkButton)sender).CommandArgument;
lnkbtn.Enabled = true;
if (lnkbtn.ID == str)
{
ViewState["str"] = str + "~" + lnkbtn.ID;
InitPage();
ViewState["st"] = null;
_flag = false;
break;
}
}
}
}

You need to read up on your ASP.NET Page Life Cycle - http://msdn.microsoft.com/en-us/library/ms178472(VS.100).aspx
Very roughly, the following events get called during page lifecycle.
Init -> Controls are created & wired up with event handlers
Load ViewState/ControlState -> Controls are reset to their previous state from the last round trip (including whether or not they need to fire their events)
Load -> Controls are loaded into the Page's Control Tree
Control Events (Clicks etc...) are executed.
The problem you have is that you are creating your control and wiring it up to fire dynamically in the 4th step there, which is too late in the page lifecycle.
On the next round trip, if someone does interact with that control, and the lifecycle starts over, that control won't exist by the time the page is preparing to execute commands.
You'll need to move the creation of your RadioButton to a much earlier stage in the pages creation. In your updated code, try moving your Page_Load code into the override oninit method instead.

Why won't the label populate

I have been trying to create a chess strategy application. I seem to be having issues with trying to get the label1 control to populate during run time. I am actually pretty new to the idea of dynamically creating events like 'mouse enter, mouse leave' How do I get the label to show the coordinates in the mouse enter event
int currentXposition, currentYposition;
const string positionLabel = "Current Position: ";
private void Test_Load(object sender, EventArgs a)
{
var temp=Color.Transparent; //Used to store the old color name of the panels before mouse events
var colorName = Color.Red; //Color used to highlight panel when mouse over
int numBlocks = 8; //Used to hold the number of blocks per row
int blockSize=70;
//Initialize new array of Panels new
string[,] Position = new string[8, 8];
Panel[,] chessBoardPanels = new Panel[numBlocks, numBlocks];
string Alphabet = "A,B,C,D,E,F,G,H";
string Numbers ="1,2,3,4,5,6,7,8";
string[] alphaStrings = Numbers.Split(',');
string[] numStrings=Numbers.Split(',');
// b = sub[0];
int FirstValue, SecondValue;
//Store Position Values
for (int firstValue = 0; firstValue < 8; ++firstValue)
{
FirstValue = Alphabet[firstValue];
for (int SecValue = 0; SecValue < 8; ++SecValue)
{
SecondValue = Numbers[SecValue];
Position[firstValue, SecValue] = alphaStrings[firstValue] + numStrings[SecValue];
}
}
//Loop to create panels
for (int iRow = 0; iRow < numBlocks; iRow++)
for (int iColumn = 0; iColumn < numBlocks; iColumn++)
{
Panel p = new Panel();
//set size
p.Size = new Size(blockSize, blockSize);
//set back colour
p.BackColor = (iRow + (iColumn % 2)) % 2 == 0 ? Color.Black : Color.White;
//set location
p.Location = new Point(blockSize *iRow+15, blockSize * iColumn+15);
chessBoardPanels[iRow, iColumn] = p;
chessBoardPanels[iRow,iColumn].MouseEnter += (s,e) =>
{
currentXposition = iRow;
currentYposition = iColumn;
var oldColor = (s as Panel).BackColor;
(s as Panel).BackColor = colorName;
temp = oldColor;
label1.Text = Position[iRow, iColumn];
};
chessBoardPanels[iRow, iColumn].MouseLeave += (s, e) =>
{
(s as Panel).BackColor = temp;
};
groupBox1.Controls.Add(p);
}
}

Try this.. It was not populating because of a out of range.. iRow always = 8...
Add this class to your project.
public class ChessSquare
{
public string Letter { get; set; }
public int Number { get; set; }
public Color Color { get; set; }
public string Position
{
get { return string.Format("{0}{1}", Letter, Number); }
}
public ChessSquare()
{
}
public ChessSquare(string letter, int number)
{
Letter = letter;
Number = number;
}
}
Replace the FormLoad method with this:
int blockSize = 20;
Panel[,] chessBoardPanels = new Panel[8, 8];
for (int i = 0; i < 8; i++)
{
for (int j = 0; j < 8; j++)
{
ChessSquare sq = new ChessSquare(((char)(65+i)).ToString(), j);
sq.Color = (i + (j % 2)) % 2 == 0 ? Color.AliceBlue : Color.White;
Panel p = new Panel()
{ Size = new Size(blockSize, blockSize),
BackColor = sq.Color,
Tag = sq,
Location = new Point(blockSize * i + 15, blockSize * j+15),
};
p.MouseEnter+=new EventHandler(squareMouseEnter);
p.MouseLeave += new EventHandler(squareMouseLeave);
chessBoardPanels[i, j] = p;
groupBox1.Controls.Add(p);
}
}
And add those two methods to your code:
void squareMouseEnter(object sender, EventArgs e)
{
Panel p = (Panel)sender;
ChessSquare sq = (ChessSquare)p.Tag;
p.BackColor = Color.Aqua;
label1.Text = string.Format("Current position: {0}", sq.Position);
}
void squareMouseLeave(object sender, EventArgs e)
{
Panel p = (Panel) sender;
ChessSquare sq = (ChessSquare)p.Tag;
p.BackColor = sq.Color;
}
I there are several ways of doing it... This one is pretty straight forward.

Display pictures with their name from database in winforms?

dataGridView1.DataSource = null;
using (SqlConnection myDatabaseConnection = new SqlConnection(myConnectionString.ConnectionString))
{
myDatabaseConnection.Open();
using (SqlCommand mySqlCommand = new SqlCommand("Select Name, Picture from Employee ", myDatabaseConnection))
{
DataSet ds = new DataSet();
SqlDataAdapter adapter = new SqlDataAdapter(mySqlCommand);
adapter.Fill(ds);
dataGridView1.DataSource = ds.Tables[0];
}
}
Instead of using datagridview, How I can display the picture with their Name in the panel or other control from the database something like this format http://static.neatorama.com/images/2008-04/yearbook-project-robot-johnny.gif in win form?
For example I have 7 records in the database, the form will display 7 panels with picture and label. And when I click or select a panel it will dipslay more information such as Address, Contacts, Etc in a textBox. If the records in the database is too many to fit in the form there will be a vertical or horizontal scroll bar.

I suggest you to create the objects you need dynamically. You can use "Location" to position your object.
Example :
int cptx = 0;
int cpty = 0;
for(int i=0; i<ds.Tables[0].Rows.Count;i++)
{
PictureBox currentpic = new PictureBox();
Label currentlabel = new Label();
currentpic.Size = new Size(20,20);
currentlabel.Size = new Size(20,20);
currentpic.BorderStyle = BorderStyle.FixedSingle;
currentlabel.Text = "te";
if(cptx >= 4)
{
cptx = 0;
cpty ++;
}
currentpic.Location= new Point((cptx*25),(cpty*50));
currentlabel.Location = new Point((cptx*25),(cpty*50)+25);
This.Controls.Add(currentpic);
cptx ++;
}
This code should do this :
EDIT : I suggest you to take a look at the "User control", the user control allow you to create you own control. So, the picture and the label will be inside a single control. The advantage to use the user control is the control you will create will be totally reusable for your other windows and/or programs.

Form has only one panel (pnlGrid) and panel's AutoScroll property setted as true;
DataTable dtImage = new DataTable();
dtImage.Columns.Add("Path");
dtImage.Columns.Add("Name");
dtImage.Rows.Add(new object[] { "ImagePath", "ImageText" });
dtImage.Rows.Add(new object[] { "ImagePath", "ImageText" });
dtImage.Rows.Add(new object[] { "ImagePath", "ImageText" });
CreateImageGrid(dtImage);
and method;
private void CreateImageGrid(DataTable dtDataSource)
{
int colCount = 5;
int rowCount = 0;
int imgWidth = 100;
int imgHeight = 100;
int imgPadding = 10;
int lblPadding = 5;
int ind = -1;
PictureBox pic = null;
Label lbl = null;
if (dtDataSource.Rows.Count > colCount)
{
rowCount = Convert.ToInt32(dtDataSource.Rows.Count / colCount);
if (Convert.ToInt32(dtDataSource.Rows.Count % colCount) > 0)
{
rowCount++;
}
}
else
{
rowCount = 1;
}
for (int j = 0; j < rowCount; j++)
{
for (int i = 0; i < colCount && dtDataSource.Rows.Count > ((j * colCount) + i); i++)
{
ind = (j * colCount) + i;
pic = new PictureBox();
pic.Image = Image.FromFile(dtDataSource.Rows[ind]["Path"].ToString());
pnlGrid.Controls.Add(pic);
pic.Width = imgWidth;
pic.Height = imgHeight;
pic.Top = (j * (imgHeight + imgPadding)) + imgPadding;
pic.Left = (i * (imgWidth + imgPadding)) + imgPadding;
lbl = new Label();
lbl.Text = dtDataSource.Rows[ind]["Name"].ToString();
pnlGrid.Controls.Add(lbl);
lbl.Left = pic.Left;
lbl.Top = pic.Top + pic.Height + lblPadding;
}
}
}
Note: Text lengths may cause problems, you should define some rules.

How to get the values dynamically added controls in other parts of the code?

I have a method that creates textboxes depending on the number of parameters values that the user has to enter.And its working fine. The problem is that when the user clicks Ok i want to take the value that the user entered in these textboxes and replace them in a string. When am searching these textboxes to get the text value from them am not finding them. How do i get these values to continue my project? the code is:
protected void btnPreview_Click(object sender, EventArgs e)
{
lbHeader.Text = "Template Designer";
divQueryBuilder.Visible = false;
divTemplateDesigner.Visible = false;
divFloating.Visible = true;
if (txtQuery.Text.Contains("WHERE") || txtQuery.Text.Contains("where")||txtQuery.Text.Contains("Where"))
{
string[] splitter=new string[10];
splitter[0]="Where";
splitter[1]="WHERE";
splitter[2]="where";
splitter[3]="AND";
splitter[4] = "and";
splitter[5] = "And";
string[] condition=txtQuery.Text.Split(splitter, StringSplitOptions.None);
int numberOfParameters = condition.Length - 1;
string[] Condition1 =null;
Label[] newLabel = new Label[10];
TextBox[] txtBox = new TextBox[10];
for (int i = 0; i < numberOfParameters; i++)
{
string lbValue="lbValue";
string lbID=lbValue+i;
string txtValue = "txtValue";
string txtID = txtValue + i;
HtmlGenericControl genericControl = new HtmlGenericControl("br/");
Condition1 = condition[i + 1].Split('[', ']');
newLabel[i] = new Label();
txtBox[i] = new TextBox();
newLabel[i].ID=lbID;
newLabel[i].Text = Condition1[1];
txtBox[i].ID = txtID;
td2.Controls.Add(newLabel[i]);
td2.Controls.Add(genericControl);
td2.Controls.Add(txtBox[i]);
td2.Controls.Add(genericControl);
txtBox[i].EnableViewState = true;
}
}
}
private bool ControlExistence(string lbID)
{
try
{
td2.FindControl(lbID);
return true;
}
catch(Exception ex)
{
return false;
}
}
protected void btnOk_Click(object sender, EventArgs e)
{
// GetTextBoxValues();
string[] splitter1 = new string[10];
splitter1[0] = "Where";
splitter1[1] = "WHERE";
splitter1[2] = "where";
splitter1[3] = "AND";
splitter1[4] = "and";
splitter1[5] = "And";
string[] condition = txtQuery.Text.Split(splitter1, StringSplitOptions.None);
int numberOfParameters = condition.Length - 1;
string[] splitter = new string[4];
splitter[0] = "[";
splitter[1] = "]";
splitter[2] = "'";
string[] queryBoxValue = txtQuery.Text.Split(splitter,StringSplitOptions.RemoveEmptyEntries);
StringBuilder query = new StringBuilder();
TextBox txtBox = new TextBox();
for (int i = 0; i < queryBoxValue.Length; i++)
{
if (!queryBoxValue[i].Contains("?"))
{
query.Append(queryBoxValue[i]);
query.Append(" ");
}
else
{
for (int counter1 = 0; counter1 < numberOfParameters; counter1++)
{
string txtValue = "txtValue";
string txtID = txtValue + counter1;
if (ControlExistence(txtID))
{
TextBox box = (TextBox)td2.FindControl(txtID);
string b = box.Text;
//txtBox.ID = txtID;
}
txtBox.Text = "'" + txtBox.Text + "'";
queryBoxValue[i] = queryBoxValue[i].Replace(queryBoxValue[i], txtBox.Text);
query.Append(queryBoxValue[i]);
}
}
}
string fireQuery = query.ToString();
adp = new SqlDataAdapter(fireQuery, conn);
tab = new DataTable();
adp.Fill(tab);
if (tab.Rows.Count > 0)
{
string[] tempString = txtTemplate.Text.Split(' ');
for (int j = 0; j < tempString.Length; j++)
{
if (tempString[j].StartsWith("["))
{
txtPreview.Text = txtTemplate.Text.Replace(tempString[j], tab.Rows[0][0].ToString());
}
}
}
divFloating.Visible = false;
divQueryBuilder.Visible = false;
divTemplateDesigner.Visible = true;
}
Please help. This has become a blocker for me.

Have a list of the added controls and use it when needed.
for (int i = 0; i < numberOfParameters; i++)
{
// ...
td2.Controls.Add(newLabel[i]);
td2.Controls.Add(genericControl);
td2.Controls.Add(txtBox[i]);
td2.Controls.Add(genericControl);
addedTextBoxes.Add(txtBox[i]);
// ...
}
And then from another part of your code:
var values = addedTextBoxes.Select(tb => tb.Text).ToList();
foreach (var txtBox in addedTextBoxes)
{
// ...
}
etc...