Can i use the delphi 5 compiled dll in .net like our com dll - C# Discussion Boards

28-Oct-05 14:26

>>created a checkbos and a button like this:
CheckBox checkBox2 = new CheckBox();
checkBox2.Text="Test";
checkBox2.Location = new System.Drawing.Point(16,64);
//create the button
btnPF.Text="Create";
btnPF.Location = new System.Drawing.Point(208,208);
btnPF.Click += new System.EventHandler(btnPF_Click);
>> on the event I place this code
if(checkBox2.Checked==true)
MessageBox.Show("checked","Info";
else
MessageBox.Show("Not checked","Info");
>>problem, even if the box is checked, the message is always "Not Check"
>>Any help is greatly appreciated

jmac714228-Oct-05 15:31

28-Oct-05 15:31

First, you don't need the first 8 lines of code you posted, it's automatically generated by the VS.NET designer, and the default control code is generated by double-clicking the control in the designer view. Other than that, the control should read something like this:

<br />
public void btnPF_Click(object sender, EventArgs e)<br />
{<br />
    if (checkBox2.Checked)    // This method defaults to true<br />
    {<br />
        MessageBox.Show("Checked", "Info");    // You didn't close the method here<br />
    }<br />
    else<br />
    {<br />
        MessageBox.Show("Not checked", "Info");<br />
    }<br />
}<br />

So, in short, use the VS.NET designer to generate any code except for the code inside the main scope in the code above (the '{}' that is opened first and closed last), using the the drag and drop to the designer method to make the controls, and double-clicking them to add code to them.

picasso228-Oct-05 17:27

28-Oct-05 17:27

Thank you jamac7142;
I did not explained correctly so let me try again:
I have one button (btnCreate)on form, when it is clicked, it creates three components, a panel, checkbox and another button (btnPF). When the new button (btnPF)is clicked, it checks if the checkbox is checked or not.
So the 8 lines are part of the first button (btnCreate).

jmac714228-Oct-05 18:14

28-Oct-05 18:14

Try this then:

<br />
private void btnCreate_Click(object sender, EventArgs e)<br />
{<br />
    Panel panel1 = new Panel();<br />
    CheckBox cB1 = new CheckBox();<br />
    Button btnPF = new Button();<br />
<br />
    /* Control Properties. you'll have to fill in the locations and sizes by replacing the x and y values I substituted instead of integers, as well as any different text */<br />
    panel1.Location = new Point(x,y);<br />
    panel1.Size = new Size(x,y);<br />
    <br />
    cB1.Location = new Point(x,y);<br />
    cB1.Size = new Size(x,y);<br />
    cB1.Text = "checkBox";<br />
   <br />
    btnPF.Location = new Point(x,y);<br />
    btnPF.Size = new Size(x,y);<br />
    btnPF.Text = "button";<br />
<br />
    // Add them:<br />
    Controls.Add(panel1);<br />
    Controls.Add(cB1);<br />
    Controls.Add(btnPF);<br />
<br />
    // Add btnPF's event:<br />
    this.btnPF.Click += new System.EventHandler(this.btnPF_Click);<br />
}<br />
private btnPF_Click(object sender, EventArgs e)<br />
{<br />
    if (cB1.Checked)<br />
    {<br />
        MessageBox.Show("Checked", "Info");<br />
    }<br />
    else<br />
        MessageBox.Show("Unchecked", "Info");<br />
}<br />

-- modified at 0:16 Saturday 29th October, 2005

picasso228-Oct-05 21:23

28-Oct-05 21:23

You code is just like mine with the exception of the line adding the controls:

panel1.Controls.AddRange(new Control[]{cB1,btnPF});
I changed to your sugetion, just incase
// Add them:
Controls.Add(panel1);
Controls.Add(cB1);
Controls.Add(btnPF);

but
Still no luck.
somehow does not like the "if (cB1.Checked)...."
it alsways displays the message under "else"

jmac714228-Oct-05 21:37

28-Oct-05 21:37

Try this:

<br />
if (checkBox1.Checked)<br />
{<br />
    MessageBox.Show("Checked");<br />
}<br />
else<br />
{<br />
    MessageBox.Show("Unchecked");<br />
}<br />

picasso229-Oct-05 11:59

29-Oct-05 11:59

Thank you jmac7142 for helping me troubleshoot this problem.
An tried the MessageBox as you suggested.
still no luck.
I am planning to use about five checkboxes but I can even make it work with one. May be I should the "switch" insted of the "if-else"

jmac714229-Oct-05 15:27

29-Oct-05 15:27

My last post worked on my machine though...