inserting dynamic textbox’s multiple text values to dataTabl

Jayanth Reddy

I am trying to add a row for data table whenever we click on a button and for n clicks n rows of textboxes properties along with its text values should be added to n datarows of a datatable.Entire code is fine but the run time text values were not getting added.Please help me and thanks in advance

(Kindly Have a look at rar file for the output)

namespace DataTableExample
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
internal TextBox tb2;
internal int X = 1;
internal int A = 1;
DataTable dt = new DataTable();
DataRow dr;
private void Button1_Click(object sender, EventArgs e)
{
if (X <13)
{
Show();
X++;
}
else
{
MessageBox.Show("Only 12 values per page");
}
}
private new void Show()
{
tb2 = new TextBox();
tb2.Multiline = true;
//tb2.Text = UserControl.;
tb2.Height = 22;
tb2.Width = 60;
tb2.Left = 43;
tb2.Top = 140 + A* 36;
this.Controls.Add(tb2);
A+=1;
dr = dt.NewRow();
dr["text"] = tb2.Text;
dr["Height"] = tb2.Height;
dr["Width"] = tb2.Width;
dr["Left"] = tb2.Left;
dr["Top"] = tb2.Top;
dt.Rows.Add(dr);
}
private void Button2_Click(object sender, EventArgs e)
{
dataGridView1.DataSource = dt;
}
private void Form1_Load(object sender, EventArgs e)
{
dt.Columns.Add("text",typeof(String));
dt.Columns.Add("Height",typeof(int));
dt.Columns.Add("Width", typeof(int));
dt.Columns.Add("Left", typeof(int));
dt.Columns.Add("Top", typeof(int));
}
}
}

4 Replies

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Amit Mohanty7y ago
Accepted answer
Hey try this.
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Windows.Forms;

namespace Notification
{
    public partial class Form3 : Form
    {
        internal TextBox tb2;
        internal int X = 1;
        internal int A = 0;
        DataTable dt = new DataTable();
        DataRow dr;

        public delegate void MyDelegate();

        public Form3()
        {
            InitializeComponent();
        }

        private void Form3_Load(object sender, EventArgs e)
        {
            dt.Columns.Add("text", typeof(String));
            dt.Columns.Add("Height", typeof(int));
            dt.Columns.Add("Width", typeof(int));
            dt.Columns.Add("Left", typeof(int));
            dt.Columns.Add("Top", typeof(int));
        }

        private void Button1_Click(object sender, EventArgs e)
        {
            if (X < 13)
            {
                MyDelegate delInstance = new MyDelegate(Show);
                delInstance.BeginInvoke(null, null);
                X++;
            }
            else
            {
                MessageBox.Show("Only 12 values per page");
            }
        }

        private new void Show()
        {
            tb2 = new TextBox();
            tb2.Name = A.ToString();
            tb2.Multiline = true;
            tb2.Height = 22;
            tb2.Width = 60;
            tb2.Left = 43;
            tb2.Top = 140 + A * 36;
            this.Invoke(new Action(() => this.Controls.Add(tb2)));
            A += 1;
            dr = dt.NewRow();
            dr["text"] = tb2.Text;
            dr["Height"] = tb2.Height;
            dr["Width"] = tb2.Width;
            dr["Left"] = tb2.Left;
            dr["Top"] = tb2.Top;
            dt.Rows.Add(dr);
        }

        private void Button2_Click(object sender, EventArgs e)
        {
            var textBoxControls = GetAll(this, typeof(TextBox));
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                dt.Rows[i]["text"] = textBoxControls.ElementAt(i).Text;
            }
            dataGridView1.DataSource = dt;
            dataGridView1.Refresh();
        }

        public IEnumerable GetAll(Control control, Type type)
        {
            var controls = control.Controls.Cast();

            return controls.SelectMany(ctrl => GetAll(ctrl, type))
                                      .Concat(controls)
                                      .Where(c => c.GetType() == type);
        }
    }
}
+3
Jayanth Reddy7y ago
Amit Mohanty,

You made my day.....I feel like no where I was alone because of CsharpCorner.Thanks a ton
+1
Jayanth Reddy7y ago
Rajanikant,Thanks for the reply...Can you explain me some logic how to implement the concept in achieving my deserved output..
0
Rajanikant Hawaldar7y ago
Hi Jayath Reddy,
You should use UI thread when update controls, Please go these links for understadning with example
https://stackoverflow.com/questions/661561/how-do-i-update-the-gui-from-another-thread
https://docs.microsoft.com/en-us/dotnet/framework/winforms/controls/how-to-make-thread-safe-calls-to-windows-forms-controls
https://www.codeproject.com/Articles/18702/Threading-in-NET-and-WinForms
+2