Dynamic ComboBox IndexChanged Event, WinForms, C#

[roastr]

Hello All:

I am making a dynamic form that I have linked to a SQL database. On my form I create a combobox dynamically. I would like to have an something like a selectedindexchanged event fire when an item in the combobox is selected. If possible, once this event fires I would like to create other dynamic controls based on the selection. I know how to do this on a web form, but not in win forms. I also know that there is an easier way around all the dynamic controls that I am making but I am experimenting with the dynamic controls. Any suggestions would be greatly appreciated. Here is my code for the form:

CODE

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Web;

namespace Real_Estate_Manager
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();

}

private void button1_Click(object sender, EventArgs e)
{
btnUpdateProps.Visible = true;
}

private void Form1_Load(object sender, EventArgs e)
{
// TODO: This line of code loads data into the 'propertyManagerDataSet.Property' table. You can move, or remove it, as needed.
this.propertyTableAdapter.Fill(this.propertyManagerDataSet.Property);

}

public void btnUpdateProps_Click(object sender, EventArgs e)
{
Label lblStreet = new Label();
lblStreet.Text = "Street:";
lblStreet.Location = new Point(20, 155);
lblStreet.Width = 40;
this.Controls.Add(lblStreet);

TextBox txtStreet = new TextBox();
txtStreet.Location = new Point(60, 150);
txtStreet.Width = 150;
this.Controls.Add(txtStreet);

Label lblCity = new Label();
lblCity.Text = "City:";
lblCity.Location = new Point(20, 185);
lblCity.Width = 40;
this.Controls.Add(lblCity);

TextBox txtCity = new TextBox();
txtCity.Location = new Point(60, 180);
txtCity.Width = 150;
this.Controls.Add(txtCity);

Label lblState = new Label();
lblState.Text = "State:";
lblState.Location = new Point(20, 215);
lblState.Width = 40;
this.Controls.Add(lblState);

String[] strStates = new string[] {"AL","AK","AS","AZ","AR","CA","CO","CT",
"DE","DC","FM","FL","GA","GU","HI","ID","IL","IN","IA","KS","KY","LA",
"ME","MH","MD","MA","MI","MN","MS","MO","MT","NE","NV","NH","NJ","NM",
"NY","NC","ND","MP","OH","OK","OR","PW","PA","PR","RI","SC","SD","TN",
"TX","UT","VT","VI","VA","WA","WV","WI","WY"};

ComboBox ddlState = new ComboBox();
ddlState.Location = new Point(60, 210);
ddlState.Width = 150;
ddlState.Text = "Please Select a State";
// ddlState.Items.Insert(0, "Please Select a State");
ddlState.Items.AddRange(strStates);
this.Controls.Add(ddlState);

Label lblZip = new Label();
lblZip.Text = "Zip Code:";
lblZip.Location = new Point(5, 245);
lblZip.Width = 60;
this.Controls.Add(lblZip);

TextBox txtZip = new TextBox();
txtZip.Location = new Point(60, 240);
txtZip.Width = 150;
this.Controls.Add(txtZip);

Label lblType = new Label();
lblType.Location = new Point(20, 275);
lblType.Text = "Type";
lblType.Width = 40;
this.Controls.Add(lblType);

string[] strTypes = new string[] {"Military", "Educational", "Government",
"Industrial", "Commercial", "Residential"};

ComboBox ddlType = new ComboBox();
ddlType.Location = new Point(60, 270);
ddlType.Width = 150;
ddlType.Text = "Please Select the Type";
ddlType.Items.AddRange(strTypes);
this.Controls.Add(ddlType);
ddlType.SelectedIndexChanged = ddlType_SelectedIndexChanged();


}

public void ddlType_SelectedIndexChanged()
{
if (ddlType.SelectedIndexChanged = 0)

}
}
}



Here is my code that I am trying to do the event on:

CODE

string[] strTypes = new string[] {"Military", "Educational", "Government",
"Industrial", "Commercial", "Residential"};

ComboBox ddlType = new ComboBox();
ddlType.Location = new Point(60, 270);
ddlType.Width = 150;
ddlType.Text = "Please Select the Type";
ddlType.Items.AddRange(strTypes);
this.Controls.Add(ddlType);
ddlType.SelectedIndexChanged = ddlType_SelectedIndexChanged();


}

public void ddlType_SelectedIndexChanged()
{
if (ddlType.SelectedIndexChanged = 0)

}


Any suggestions would be greatly appreciated. I have been struggling with this for a couple days.

Thanks,
Roaster

[nelo]

Hi there. An interesting topic. Please edit your original post and use the [code] tags to format your code. You open the tag at the beginning of the code and you close it at the end. This is a general rule on the forum. It would make your code alot easier to read without having to copy it to a C# editor. Thanks.

[eclipsed4utoo]

you were close. This is how you would do it...

string[] strTypes = new string[] {"Military", "Educational", "Government",
"Industrial", "Commercial", "Residential"};

ComboBox ddlType = new ComboBox();
ddlType.Location = new Point(60, 270);
ddlType.Width = 150;
ddlType.Text = "Please Select the Type";
ddlType.Items.AddRange(strTypes);
ddlType.SelectedIndexChanged += new EventHandler(ddlType_SelectedIndexChanged);
this.Controls.Add(ddlType);

and your event would look like this...

public void ddlType_SelectedIndexChanged(object sender, EventArgs e)
{
      if (ddlType.SelectedIndexChanged == 0)
      {
              // do whatever when the user selects the first item in the combobox.
      }
}