I am new at C# and it seems the following code below does not seem to select my combobox value:
The dropdown looks like this:
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All code above does not seem to select HDMI 4 on the list... The error i have is:
System.ArgumentOutOfRangeException: InvalidArgument=Value of '2' is not valid for 'SelectedIndex'. Parameter name: SelectedIndex at System.Windows.Forms.ComboBox.set_SelectedIndex(Int32 value)
Any help would be great!
**update showing combobox**
![]()
And this is what fires the action after selecting something in that dropdown:
Code:
private void button1_Click(object sender, EventArgs e)
{
cbPortNumber.SelectedIndex = 3;
}
All code above does not seem to select HDMI 4 on the list... The error i have is:
System.ArgumentOutOfRangeException: InvalidArgument=Value of '2' is not valid for 'SelectedIndex'. Parameter name: SelectedIndex at System.Windows.Forms.ComboBox.set_SelectedIndex(Int32 value)
Any help would be great!
**update showing combobox**
Code:
//
// cbPortNumber
//
this.cbPortNumber.AutoCompleteMode = System.Windows.Forms.AutoCompleteMode.Append;
this.cbPortNumber.Enabled = false;
this.cbPortNumber.FormattingEnabled = true;
this.cbPortNumber.Location = new System.Drawing.Point(174, 40);
this.cbPortNumber.Name = "cbPortNumber";
this.cbPortNumber.Size = new System.Drawing.Size(133, 21);
this.cbPortNumber.TabIndex = 11;
this.cbPortNumber.Text = "global_hdmi_port";
this.helpPortNumber.SetToolTip(this.cbPortNumber, "The HDMI port number, to which you connected your USB-CEC adapter.");
this.cbPortNumber.SelectedIndexChanged += new System.EventHandler(this.cbPortNumber_SelectedIndexChanged);Code:
#region Global settings
public CECSettingByte HDMIPort
{
get
{
if (!_settings.ContainsKey(KeyHDMIPort))
{
CECSettingByte setting = new CECSettingByte(KeyHDMIPort, "HDMI port", 1, _changedHandler) { LowerLimit = 1, UpperLimit = 15, EnableSetting = EnableHDMIPortSetting };
setting.Format += delegate(object sender, ListControlConvertEventArgs args)
{
ushort tmp;
if (ushort.TryParse((string)args.Value, out tmp))
args.Value = "HDMI " + args.Value;
};
Load(setting);
_settings[KeyHDMIPort] = setting;
}
return _settings[KeyHDMIPort].AsSettingByte;
}
}Code:
private void OnSettingChanged(CECSetting setting, object oldValue, object newValue)
{
if (setting.KeyName == CECSettings.KeyHDMIPort)
{
CECSettingByte byteSetting = setting as CECSettingByte;
if (byteSetting != null)
{
if (!Settings.OverridePhysicalAddress.Value)
Config.HDMIPort = byteSetting.Value;
CECActions.SetConnectedDevice(Settings.ConnectedDevice.Value, byteSetting.Value);
}
}