How can i make that in the ComboBox control it will show only part of each item name without the Win32_ in the start of each item ?

Question

This is my form1 code:
using System;
using System.Collections;
using System.Management;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace GetHardwareInfo
public partial class frmMain : Form
public frmMain()
InitializeComponent();
cmbxOption.SelectedItem = "Win32_Processor";
cmbxStorage.SelectedItem = "Win32_DiskDrive";
cmbxMemory.SelectedItem = "Win32_CacheMemory";
cmbxSystemInfo.SelectedItem = "";
cmbxNetwork.SelectedItem = "Win32_NetworkAdapter";
cmbxUserAccount.SelectedItem = "Win32_SystemUsers";
cmbxDeveloper.SelectedItem = "Win32_COMApplication";
cmbxUtility.SelectedItem = "Win32_1394Controller";
private void InsertInfo(string Key, ref ListView lst, bool DontInsertNull)
lst.Items.Clear();
ManagementObjectSearcher searcher = new ManagementObjectSearcher("select * from " + Key);
try
foreach (ManagementObject share in searcher.Get())
ListViewGroup grp;
try
grp = lst.Groups.Add(share["Name"].ToString(), share["Name"].ToString());
catch
grp = lst.Groups.Add(share.ToString(), share.ToString());
if (share.Properties.Count <= 0)
MessageBox.Show("No Information Available", "No Info", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
foreach (PropertyData PC in share.Properties)
ListViewItem item = new ListViewItem(grp);
if (lst.Items.Count % 2 != 0)
item.BackColor = Color.White;
else
item.BackColor = Color.WhiteSmoke;
item.Text = PC.Name;
if (PC.Value != null && PC.Value.ToString() != "")
switch (PC.Value.GetType().ToString())
case "System.String[]":
string[] str = (string[])PC.Value;
string str2 = "";
foreach (string st in str)
str2 += st + " ";
item.SubItems.Add(str2);
break;
case "System.UInt16[]":
ushort[] shortData = (ushort[])PC.Value;
string tstr2 = "";
foreach (ushort st in shortData)
tstr2 += st.ToString() + " ";
item.SubItems.Add(tstr2);
break;
default:
item.SubItems.Add(PC.Value.ToString());
break;
else
if (!DontInsertNull)
item.SubItems.Add("No Information available");
else
continue;
lst.Items.Add(item);
catch (Exception exp)
MessageBox.Show("can't get data because of the followeing error \n" + exp.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Information);
private void RemoveNullValue(ref ListView lst)
foreach (ListViewItem item in lst.Items)
if (item.SubItems[1].Text == "No Information available")
item.Remove();
#region Control events ...
private void cmbxNetwork_SelectedIndexChanged(object sender, EventArgs e)
InsertInfo(cmbxNetwork.SelectedItem.ToString(), ref lstNetwork, chkNetwork.Checked);
private void cmbxSystemInfo_SelectedIndexChanged(object sender, EventArgs e)
InsertInfo(cmbxSystemInfo.SelectedItem.ToString(), ref lstSystemInfo, chkSystemInfo.Checked);
private void cmbxUtility_SelectedIndexChanged(object sender, EventArgs e)
InsertInfo(cmbxUtility.SelectedItem.ToString(), ref lstUtility, chkUtility.Checked);
private void cmbxUserAccount_SelectedIndexChanged(object sender, EventArgs e)
InsertInfo(cmbxUserAccount.SelectedItem.ToString(), ref lstUserAccount, chkUserAccount.Checked);
private void cmbxStorage_SelectedIndexChanged(object sender, EventArgs e)
InsertInfo(cmbxStorage.SelectedItem.ToString(), ref lstStorage, chkDataStorage.Checked);
private void cmbxDeveloper_SelectedIndexChanged(object sender, EventArgs e)
InsertInfo(cmbxDeveloper.SelectedItem.ToString(), ref lstDeveloper, chkDeveloper.Checked);
private void cmbxMemory_SelectedIndexChanged(object sender, EventArgs e)
InsertInfo(cmbxMemory.SelectedItem.ToString(), ref lstMemory, chkMemory.Checked);
private void chkHardware_CheckedChanged(object sender, EventArgs e)
if (chkHardware.Checked)
RemoveNullValue(ref lstDisplayHardware);
else
InsertInfo(cmbxOption.SelectedItem.ToString(), ref lstDisplayHardware, chkHardware.Checked);
private void cmbxOption_SelectedIndexChanged(object sender, EventArgs e)
InsertInfo(cmbxOption.SelectedItem.ToString(), ref lstDisplayHardware, chkHardware.Checked);
private void chkDataStorage_CheckedChanged(object sender, EventArgs e)
if (chkDataStorage.Checked)
RemoveNullValue(ref lstStorage);
else
InsertInfo(cmbxStorage.SelectedItem.ToString(), ref lstStorage, chkDataStorage.Checked);
private void chkMemory_CheckedChanged(object sender, EventArgs e)
if (chkMemory.Checked)
RemoveNullValue(ref lstMemory);
else
InsertInfo(cmbxMemory.SelectedItem.ToString(), ref lstStorage, false);
private void chkSystemInfo_CheckedChanged(object sender, EventArgs e)
if (chkSystemInfo.Checked)
RemoveNullValue(ref lstSystemInfo);
else
InsertInfo(cmbxSystemInfo.SelectedItem.ToString(), ref lstSystemInfo, false);
private void chkNetwork_CheckedChanged(object sender, EventArgs e)
if (chkNetwork.Checked)
RemoveNullValue(ref lstNetwork);
else
InsertInfo(cmbxNetwork.SelectedItem.ToString(), ref lstNetwork, false);
private void chkUserAccount_CheckedChanged(object sender, EventArgs e)
if (chkUserAccount.Checked)
RemoveNullValue(ref lstUserAccount);
else
InsertInfo(cmbxUserAccount.SelectedItem.ToString(), ref lstUserAccount, false);
private void chkDeveloper_CheckedChanged(object sender, EventArgs e)
if (chkDeveloper.Checked)
RemoveNullValue(ref lstDeveloper);
else
InsertInfo(cmbxDeveloper.SelectedItem.ToString(), ref lstDeveloper, false);
private void chkUtility_CheckedChanged(object sender, EventArgs e)
if (chkUtility.Checked)
RemoveNullValue(ref lstUtility);
else
InsertInfo(cmbxUtility.SelectedItem.ToString(), ref lstUtility, false);
private void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
linkLabel1.LinkVisited = true;
System.Diagnostics.Process.Start("http://www.test.net");
#endregion
What i get is in the end that in the ComboBox in this case i call it cmbxNetwork i see in it many items all start with Win32_ For example when i click on ComboBox i see the first item is: "Win32_NetworkAdapter"
Instead Win32_NetworkAdapter i want to see in the ComboBox only: NetworkAdapter But when i select the item it should be selected as Win32_NetworkAdapter but the user should see and select only NetworkAdapter.
I want to remove as test from the ComboBox items the Win32_ But only that the user will see it without Win32_
Also in the constructor when i'm doing now: cmbxNetwork.SelectedItem = "Win32_NetworkAdapter"; so instead if i'm doing: cmbxNetwork.SelectedItem = "NetworkAdapter"; it will be enough. THe program will use the "Win32_NetworkAdapter";
but again what i see and user in the ComboBox as item is only the NetworkAdapter

Answer 1

Hi Chocolade1972,
>> I want to remove as test from the ComboBox items the Win32_ But only that the user will see it without Win32_  Also in the constructor when i'm doing now: cmbxNetwork.SelectedItem = "Win32_NetworkAdapter"; so instead if i'm doing:
cmbxNetwork.SelectedItem = "NetworkAdapter";
Do you mean that you want the ComboBox show the value of “NetworkAdapter” in the text, but when you refer the value of the cmbxNetwork.SelectedItem, it will be “Win32_NetworkAdapter”? If so, I am afraid that you need create your own ComboboxItem and override
the ToString() method to return the text you want.
You could modify the code below for your own achievement.
public partial class Form0417 : Form
public Form0417()
InitializeComponent();
public class ComboboxItem
public string Text { get; set; }
public object Value { get; set; }
public override string ToString()
return Text;
private void Form0417_Load(object sender, EventArgs e)
ComboboxItem item1 = new ComboboxItem();
item1.Text = "Processor";
item1.Value = "Win32_Processor";
ComboboxItem item2 = new ComboboxItem();
item2.Text = "DiskDrive";
item2.Value = "Win32_DiskDrive";
cmbxOption.Items.Add(item1);
cmbxOption.Items.Add(item2);
//MessageBox.Show((cmbxOption.SelectedItem as ComboboxItem).Value.ToString());
private void cmbxOption_SelectedIndexChanged(object sender, EventArgs e)
MessageBox.Show((cmbxOption.SelectedItem as ComboboxItem).Value.ToString());
Best Regards,
Edward
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