I am writing a code in C# I have 2 Forms and the code creates textboxes and corresponding checkboxes dynamically. The code I wrote creates dynamic textboxes and checkboxes successfully. However, I am not able to delete the row of textboxes in a selected checkbox line.
public void CreateTextBox(int i, StringReader sr)
{
ProductForm form2 = new ProductForm();
_cb = new CheckBox[i];
form2.Visible = true;
form2.Activate();
int x = 10;
int y = 30;
int width = 100;
int height = 20;
for (int n = 0; n < i; n++)
{
String line = sr.ReadLine();
String[] line_ = line.Split(new char[] {'\t'});
String cbName = "chkBox_" + n.ToString();
_cb[n] = new CheckBox();
_cb[n].Name = cbName;
_cb[n].Location = new Point(2, y);
_cb[n].Checked = false;
form2.Controls.Add(_cb[n]);
if (line.Length > 3)
{
for (int row = 0; row < 4; row++)
{
String name = "txtBox_" + row.ToString();
TextBox tb = new TextBox();
tb.Name = name;
tb.Text = line_[row].ToString();
tb.Location = new Point(x, y);
tb.Height = height;
if (row == 1)
{
tb.Width = width * row;
}
if (row == 3)
{
tb.Width = width * 5;
}
else
{
tb.Width = width - 20;
}
x += 10 + width;
form2.Controls.Add(tb);
}
}
x = 10;
y += 25;
}
}
private void DeleteTextBoxButton_Click(object sender, EventArgs e)
{
//Here should I add a code in order to delete dynamically created
//textboxes by clicking checkbox and button
}
}
Not sure of your question. But if I am right, this could do the trick.
SOLUTION1: While creating all the controls, add them to a List<Controls>. When you are checking the checkbox to delete the row, get the name of the checkbox, search it in the List<Controls>. So this way can get the index of the row of the checkbox clicked. Now delete the controls of that rows.
SOLUTION2: Create your controls in a TablelayoutPanel and everything will be easy.
EDIT
Copy paste everything in the form1, se btn_click as a event handler for a button. Let the size of the form a bit big. Everything should work fine now. If not working, let me know.
class MyControl
{
public TextBox txt1 { get; set; }
public TextBox txt2 { get; set; }
public TextBox txt3 { get; set; }
public TextBox txt4 { get; set; }
public CheckBox cb { get; set; }
public MyControl(TextBox txt1, TextBox txt2, TextBox txt3, TextBox txt4, CheckBox cb)
{
this.txt1 = txt1;
this.txt2 = txt2;
this.txt3 = txt3;
this.txt4 = txt4;
this.cb = cb;
}
}
List<MyControl> list = new List<MyControl>();
public int x = 50, n = 1;
TextBox txtTemp, txt1, txt2, txt3, txt4;
CheckBox cbTemp;
private void btn_Click(object sender, EventArgs e)
{
txtTemp = new TextBox();
txtTemp.Location = new System.Drawing.Point(10, x);
txtTemp.Name = "txt1_" + n;
txt1 = txtTemp;
txtTemp = new TextBox();
txtTemp.Location = new System.Drawing.Point(120, x);
txtTemp.Name = "txt2_" + n;
txt2 = txtTemp;
txtTemp = new TextBox();
txtTemp.Location = new System.Drawing.Point(230, x);
txtTemp.Name = "txt3_" + n;
txt3 = txtTemp;
txtTemp = new TextBox();
txtTemp.Location = new System.Drawing.Point(350, x);
txtTemp.Name = "txt4_" + n;
txt4 = txtTemp;
cbTemp = new CheckBox();
cbTemp.Name = "cb1_" + n;
cbTemp.Enter += new EventHandler(cbTemp_Enter);
cbTemp.Location = new System.Drawing.Point(490, x);
this.Controls.Add(txt1);
this.Controls.Add(txt2);
this.Controls.Add(txt3);
this.Controls.Add(txt4);
this.Controls.Add(cbTemp);
list.Add(new MyControl(txt1, txt2, txt3, txt4, cbTemp));
x += 40;
n++;
}
void cbTemp_Enter(object sender, EventArgs e)
{
if ((MessageBox.Show("Are you Sure?", "Warning", MessageBoxButtons.YesNo)) == DialogResult.No)
return;
CheckBox cbMain = (CheckBox)sender;
int index = Search(cbMain);
this.Controls.Remove(list[index].txt1);
this.Controls.Remove(list[index].txt2);
this.Controls.Remove(list[index].txt3);
this.Controls.Remove(list[index].txt4);
this.Controls.Remove(list[index].cb);
}
private int Search(CheckBox cbMain)
{
int temp = 0;
foreach (MyControl item in list)
{
if(cbMain.Name == item.cb.Name)
temp = list.IndexOf(item);
}
return temp;
}
For WinForms, I recommend putting the generated TextBoxes into the Tag field of the CheckBox. Then keep a managed list of all CheckBoxes. Once they click the delete button, iterate through the collection of CheckBoxes. If their state is checked, pull the TextBox out of the Tag field, remove it from the form collection, then delete it.
NOTE: This code is untested but should work in principle.
UPDATE: Reading your latest comment, instead of storing a single TextBox in the Tag, just create another List of them and store the entire list in the tag. Then iterate through those in the delete method.
private List<CheckBox> _checkboxes = new List<CheckBox>();
public void CreateTextBox( int i, StringReader r )
{
// ... do your stuff here
_cb[n].Tag = tb;
// ... finish up
_checkboxes.Add( _cb[n] );
}
public void DeleteTextBoxButton_Click( object sender, EventArgs e )
{
foreach( var cb in _checkboxes )
{
if( cb.Checked )
{
TextBox tb = cb.Tag as TextBox;
if( tb != null )
{
form2.Controls.Remove( tb );
}
}
}
}
