Easiest way to create a custom dialog box which returns a value?

问题

I want to create a custom dialog box for my C# project .. I want to have a DataGridView in this custom dialog box, and there will also be a button .. When the user clicks this button, an integer value is returned to the caller, and the dialog box then terminates itself ..

How can I achieve this ?

回答1:

There is no prompt dialog box in C#. You can create a custom prompt box to do this instead.

  public static class Prompt
    {
        public static int ShowDialog(string text, string caption)
        {
            Form prompt = new Form();
            prompt.Width = 500;
            prompt.Height = 100;
            prompt.Text = caption;
            Label textLabel = new Label() { Left = 50, Top=20, Text=text };
            NumericUpDown inputBox = new NumericUpDown () { Left = 50, Top=50, Width=400 };
            Button confirmation = new Button() { Text = "Ok", Left=350, Width=100, Top=70 };
            confirmation.Click += (sender, e) => { prompt.Close(); };
            prompt.Controls.Add(confirmation);
            prompt.Controls.Add(textLabel);
            prompt.Controls.Add(inputBox);
            prompt.ShowDialog();
            return (int)inputBox.Value;
        }
    }

Then call it using:

 int promptValue = Prompt.ShowDialog("Test", "123");

回答2:

On your button set the DialogResult property to DialogResult.OK
On your dialog set the AcceptButton property to your button
Create a public property in your form called Result of int type
Set the value of this property in the click event of your button

Call your dialog in this way

using(myDialog dlg = new myDialog())
{
    if(dlg.ShowDialog() == DialogResult.OK)
    {
        int result = dlg.Result;
        // whatever you need to do with result
    }
}

回答3:

public static DialogResult InputBox(string title, string promptText, ref string value,bool isDigit=false)
    {
        Form form = new Form();
        Label label = new Label();
        TxtProNet textBox = new TxtProNet();

        if (isDigit == true)
            textBox.TypeNumricOnly = true;

        textBox.Width = 1000;
        Button buttonOk = new Button();
        Button buttonCancel = new Button();

        form.Text = title;
        label.Text = promptText;
        textBox.Text = value;

        buttonOk.Text = "OK";
        buttonCancel.Text = "Cancel";
        buttonOk.DialogResult = DialogResult.OK;
        buttonCancel.DialogResult = DialogResult.Cancel;

        label.SetBounds(9, 20, 372, 13);
        textBox.SetBounds(12, 36, 372, 20);
        buttonOk.SetBounds(228, 72, 75, 23);
        buttonCancel.SetBounds(309, 72, 75, 23);

        label.AutoSize = true;
        textBox.Anchor = textBox.Anchor | AnchorStyles.Right;
        buttonOk.Anchor = AnchorStyles.Bottom | AnchorStyles.Right;
        buttonCancel.Anchor = AnchorStyles.Bottom | AnchorStyles.Right;

        form.ClientSize = new Size(396, 107);
        form.Controls.AddRange(new Control[] { label, textBox, buttonOk, buttonCancel });
        form.ClientSize = new Size(Math.Max(300, label.Right + 10), form.ClientSize.Height);
        form.FormBorderStyle = FormBorderStyle.FixedDialog;
        form.StartPosition = FormStartPosition.CenterScreen;
        form.MinimizeBox = false;
        form.MaximizeBox = false;
        form.AcceptButton = buttonOk;
        form.CancelButton = buttonCancel;

        DialogResult dialogResult = form.ShowDialog();
        value = textBox.Text;
        return dialogResult;
    }

回答4:

One uses the MessageBox object for this type of behavior. In code, if you asked a Yes/No question to a user, it looks like this.

In the example, I'm asking the user if he or she wishes to save their changed document in a method called AskToSave().

private void AskToSave()
    {

        DialogResult result = MessageBox.Show("Save Document?", "Wait!",MessageBoxButtons.YesNo, MessageBoxIcon.Question);
        if(result == DialogResult.No)
        {
            return;
        }
        else
        {
            SaveDocument();
        }

    }

回答5:

//combo box dialog c#
//
public static string DialogCombo(string text,DataTable comboSource,string DisplyMember,string ValueMember)
    {
        //comboSource = new DataTable();


        Form prompt = new Form();
        prompt.RightToLeft = RightToLeft.Yes;
        prompt.Width = 500;
        prompt.Height = 200;
        Label textLabel = new Label() { Left = 350, Top = 20, Text = text };
        ComboBox combo = new ComboBox { Left = 50, Top = 50, Width = 400 };
        combo.DataSource = comboSource;
        combo.ValueMember = ValueMember;
        combo.DisplayMember = DisplyMember;
        Button confirmation = new Button() { Text = "تایید", Left = 350, Width = 100, Top = 70 };
        confirmation.Click += (sender, e) => { prompt.Close(); };
        prompt.Controls.Add(confirmation);
        prompt.Controls.Add(textLabel);
        prompt.Controls.Add(combo);
        prompt.ShowDialog();

        return combo.SelectedValue.ToString();
    }

来源：https://stackoverflow.com/questions/9569489/easiest-way-to-create-a-custom-dialog-box-which-returns-a-value

标签

winforms

dialog

customdialog