Showdialog accessing controls

Question

Showdialog accessing controls

rahul kumar 605

below is the snippet that i am using to open a dialog form from a datagridview on the key press of alt+c but i am having some major problems

Itemedit form has a two controls : label1 and a textbox1which i cannot access

    protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
        {   
            const int WM_KEYDOWN = 0x0100;
            const int WM_SYSKEYDOWN = 0x0104;
            int rowIndex = this.CurrentCell.RowIndex;
            int columnIndex = this.CurrentCell.ColumnIndex;
            // add new item mode 
            if (columnIndex == 0 && (msg.Msg == WM_KEYDOWN || msg.Msg == WM_SYSKEYDOWN))
            {
                if (keyData == (Keys.Alt | Keys.C))
                {
                    ItemEdit edit = new ItemEdit();
                    Point PositionX = this.Parent.PointToScreen(Point.Empty);
                    int LeftScreenX = PositionX.X;
                    Point PositionY = this.Parent.PointToScreen(Point.Empty);
                    int TopScreenY = PositionY.Y;
                    edit.StartPosition = FormStartPosition.Manual;
                    edit.Location = new Point(LeftScreenX, TopScreenY);
                    edit.ShowInTaskbar = false;
  error -->                  edit.label1.Text += "Creation";  
                    if (edit.ShowDialog() == DialogResult.Yes)
                    {                        
  error-->                      this.Rows[rowIndex].Cells[columnIndex].Value = edit.textBox1;                        
                    }
                    return true; // return true means the shortcut key has been processed
                }               
            return base.ProcessCmdKey(ref msg, keyData); // If it is not the desired shortcut key, call the method of the base class for default processing
        }

Answer accepted by question author

1 additional answer

Your answer

Answer 1

Anonymous

Hi @Rahul Kumar , Welcome to Microsoft Q&A,

You need to modify the access modifiers of label and textbox in itemedit.designer.cs to public;

public System.Windows.Forms.Label label1;
public System.Windows.Forms.TextBox textBox1;

enter image description here

In addition, there seems to be something wrong with this code:

if (edit.ShowDialog() == DialogResult.Yes)
                     {
   error--> this.Rows[rowIndex].Cells[columnIndex].Value = edit.textBox1;
                     }

What effect do you want to achieve?

Best Regards,

Jiale

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rahul kumar 605

@Anonymous , yes you are right , I am having problems in the code as well
here are the details .

on pressing alt +c inside the datagridview cell , the below will open
User's image

public partial class ItemEdit : Form
    {
        public ItemEdit()
        {
            InitializeComponent();
        }

        private void textBox1_KeyDown(object sender, KeyEventArgs e)
        {
            if ((e.KeyCode == Keys.Enter || e.KeyCode == Keys.Down) && this.Text != "")
            {
                Confirmform messForm = new Confirmform();

                Point PositionX = this.Parent.PointToScreen(Point.Empty);
                int RightScreenX = PositionX.X + this.Width;

                Point PositionY = this.Parent.PointToScreen(Point.Empty);
                int DownScreenY = PositionY.Y + this.Height;

                messForm.StartPosition = FormStartPosition.Manual;
                messForm.Location = new Point(RightScreenX - messForm.Width - 1, DownScreenY - messForm.Height - 1);
                messForm.ShowInTaskbar = false;
                if (messForm.ShowDialog() == DialogResult.Yes)
                {
                  //  textbox1data = customtextbox1.Text;
                   // DialogResult = DialogResult.Yes;
                    this.Close();
                   
                }
                else
                {
                    .
                }
            }
        }

whatever the user types in the textbox1 and presses enter , a form with the name

confirmname opens

User's image

if the user presses yes , both the confirmform and the itemedit would close and the value of the textbox1 in the itemedit would pass to the that cell of the datagridview (inside which alt + c is pressed) .

if the user chooses no on the confirmform , then only the confirmform would close .

  private void button1_Click(object sender, EventArgs e)  
        {
            DialogResult = DialogResult.Yes;
            this.Close();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            DialogResult = DialogResult.No;
            this.Close();
        }

another problem with my code is the location of confirmform .

this.Parent.PointToScreen(Point.Empty);

the above is giving me run time error .

Anonymous

Hi @Rahul Kumar ,

You can use public properties to get it, and use endeidt to end the editing state.

11_10

Itemedit:

using System.Drawing;
using System.Windows.Forms;

namespace _11_10_x
{
    public partial class Itemedit : Form
    {
        public Itemedit()
        {
            InitializeComponent();
        }

        public string textbox1data
        {
            get { return textBox1.Text; }
            set { textBox1.Text = value; }
        }
        private void textBox1_KeyDown(object sender, KeyEventArgs e)
        {
            if ((e.KeyCode == Keys.Enter || e.KeyCode == Keys.Down) && this.Text != "")
            {
                Confirmform messForm = new Confirmform();

                // Get the position of the Itemedit form on the screen
                Point itemEditLocation = this.PointToScreen(Point.Empty);

                //Offset based on the position of the Itemedit form, which can be adjusted as needed
                int xOffset = 50; // Sample offset
                int yOffset = 50; // Sample offset

                //Set the position of the new form
                messForm.StartPosition = FormStartPosition.Manual;
                messForm.Location = new Point(itemEditLocation.X + xOffset, itemEditLocation.Y + yOffset);

                messForm.ShowInTaskbar = false;
                if (messForm.ShowDialog() == DialogResult.Yes)
                {
                    textbox1data = textBox1.Text;
                    DialogResult = DialogResult.Yes;
                    this.Close();

                }
                else
                {
                    this.Close();
                }
            }
        }
    }
}

CustomData :

using System.Drawing;
using System.Windows.Forms;

namespace _11_10_x
{
    public partial class CustomData : DataGridView
    {
        public CustomData()
        {
            InitializeComponent();
        }

        protected override void OnPaint(PaintEventArgs pe)
        {
            base.OnPaint(pe);
        }

        protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
        {
            const int WM_KEYDOWN = 0x0100;
            const int WM_SYSKEYDOWN = 0x0104;
            int rowIndex = this.CurrentCell.RowIndex;
            int columnIndex = this.CurrentCell.ColumnIndex;
            // add new item mode 
            if (columnIndex == 0 && (msg.Msg == WM_KEYDOWN || msg.Msg == WM_SYSKEYDOWN))
            {
                if (keyData == (Keys.Alt | Keys.C))
                {
                    Itemedit edit = new Itemedit();
                    Point PositionX = this.Parent.PointToScreen(Point.Empty);
                    int LeftScreenX = PositionX.X;
                    Point PositionY = this.Parent.PointToScreen(Point.Empty);
                    int TopScreenY = PositionY.Y;
                    edit.StartPosition = FormStartPosition.Manual;
                    edit.Location = new Point(LeftScreenX, TopScreenY);
                    edit.ShowInTaskbar = false;
                    edit.label1.Text += "Creation";
                    if (edit.ShowDialog() == DialogResult.Yes)
                    {
                        this.Rows[rowIndex].Cells[columnIndex].Value = edit.textbox1data;
                        this.EndEdit();
                    }
                    return true; // return true means the shortcut key has been processed
                }
            }
            return base.ProcessCmdKey(ref msg, keyData); // If it is not the desired shortcut key, call the method of the base class for default processing

        }
    }
}

rahul kumar 605 Reputation points

2023-11-10T09:15:05.9966667+00:00

@Anonymous , The problem has been solved , just one thing , i found it extemely uncomfortable just to shift the location of Confirmform to the bottom right side of the editform . Any suggestion
Anonymous

2023-11-10T09:19:12.6966667+00:00

Try to edit the Offset.

Answer 2

Viorel 125.7K

Try to open the ItemEdit form, select the label, change the Modifiers property to Public. Repeat this for textbox.

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Showdialog accessing controls

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