Only mouse click event selectedindexchanged of toolStripComboBox

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I have a toolStripComboBox. I want to make selectedindexchanged event, but only when mouse click, also when pressing up and down is not done. People can help me? Thanks

Posted 24-Nov-14 14:41pm

Kit1624

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syed shanu 24-Nov-14 21:12pm

You can use some status variable and chek for mouse click event for exampole declare one global Boolean variable ,bool IsMouseclicked=false;
and in key prese set the IsMouseclicked=false and in muce click event set it to true IsMouseclicked=true; in selected index change event check for the
if(IsMouseclicked)
{
your code .....
}

Kit1624 24-Nov-14 23:21pm

Thank you

Kit1624 24-Nov-14 23:31pm

You can not give me one example? And Code Function IsMouseClick how so?

syed shanu 24-Nov-14 23:32pm

not understand what you mean

Kit1624 24-Nov-14 23:37pm

private void toolStripComboBoxLeft_SelectedIndexChanged(object sender, EventArgs e)
{
//Code.....
}

I want an example.

Kit1624 24-Nov-14 23:37pm

thanks

syed shanu 24-Nov-14 23:38pm

can you post your previous code

Kit1624 24-Nov-14 23:43pm

private void toolStripComboBoxLeft_SelectedIndexChanged(object sender, EventArgs e)
{

if (toolStripComboBoxLeft.Text != "...")
{
//SelectSeverNonNew(dgvMainLeft, _leftInfo.ServerName, _leftInfo.LoginName, _leftInfo.Password, _leftInfo.SqlConnection, bindingSourceMainLeft,toolStripComboBoxLeft);
string[] _sArrayString = new string[10];

_sArrayString = toolStripComboBoxLeft.Text.Split('-');

// Kết nối server
XmlDocument _docConnect = new XmlDocument();
_docConnect.Load(_sPathConnect);

XmlNode _connect = _docConnect.SelectSingleNode("DSServer/Server[@Name = '" + _sArrayString[0].Replace(" ", "").ToString() + "']");
XmlNode _connect2 = _docConnect.SelectSingleNode("DSServer/Server[@User= '" + _sArrayString[1].Replace(" ", "").ToString() + "']");
if (_connect != null && _connect2 != null)
{
try
{
_leftInfo.ServerName = _sArrayString[0].Replace(" ", "").ToString();
_leftInfo.LoginName = _sArrayString[1].Replace(" ", "").ToString();
_leftInfo.Password = _connect.Attributes["Password"].Value.ToString();

SqlConnection _Tmp = new SqlConnection("Server=" + _leftInfo.ServerName + "; User Id=" + _leftInfo.LoginName + "; Password=" + _leftInfo.Password + "; Persist Security Info=true;");
_leftInfo.SqlConnection = _Tmp;

//Sử dụng BindingSource

Bitmap img = new Bitmap(Application.StartupPath + "\\Images\\database.png");
dgvMainLeft.DataSource = bindingSourceMainLeft;
GetDataBinding(_BravoQuery.LoadDatabase(_leftInfo.SqlConnection), img, "Database", bindingSourceMainLeft);

_BravoEditInterface.CustomizeDataGridView(dgvMainLeft);

}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
}
else
{
frmNewConnect _frmConnect = new frmNewConnect();
_frmConnect.GetData = new frmNewConnect.SendSQLConnection(ReceivedSQLConnectionLeft);
_frmConnect.ShowDialog();

//Sử dụng BindingSource
Bitmap img = new Bitmap(Application.StartupPath + "\\Images\\database.png");
dgvMainLeft.DataSource = bindingSourceMainLeft;
GetDataBinding(_BravoQuery.LoadDatabase(_leftInfo.SqlConnection), img, "Database", bindingSourceMainLeft);

_BravoEditInterface.CustomizeDataGridView(dgvMainLeft);
}
}

I want to make selectedindexchanged event, but only when mouse click, also when pressing up and down is not done

2 solutions

Solution 2

How to completely disable use of Arrow Keys in a ComboBox (the easy way).

A very powerful feature in .NET is the ability to create custom Components by inheritance that modify the behavior and functionality of existing Controls. In the case of the built-in Microsoft Controls you can simply create a new Component and make it inherit from an existing Control.

How is inheriting from a Component different from a UserControl: a Component uses the existing user-interface of the existing Control it inherits from, a UserControl requires you design a user-interface.

Note that Components can also be used to define Controls that have no user-interface but which provide behavior and functionality to a WinForm; the Timer Control is an example of this type of Component.

A UserControl lets you create a compound Control by drag-dropping other Controls into its design-time surface, or creating and adding them in code. While (strangely enough) Visual Studio does allow you to drag-drop Controls onto the "blank" design-view of a Component, I have yet to see a case where there is an organic need for this, and, in the case of inheriting from something like a ComboBox, you would just waste your time doing this as well as create a bizarre non-feature.

1. Create a new Component:

Visual Studio / Project / Add Component => ComboBoxNoArrowKeys.cs => save

2. Open the code window for the new Component, clear it, and paste in this code:

C#

using System.ComponentModel;
using System.Windows.Forms;

namespace YourNameSpace
{
    public partial class ComboBoxNoArrowKeys : ComboBox
    {
        public ComboBoxNoArrowKeys()
        {
            InitializeComponent();
        }

        public ComboBoxNoArrowKeys(IContainer container)
        {
            container.Add(this);

            InitializeComponent();
        }
 
        public bool DisableArrowKeys { set; get; }

        protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
        {
            if(DisableArrowKeys) 
            {
                switch (keyData)
                {
                    case Keys.Up:
                    case Keys.Down:
                    case Keys.Left:
                    case Keys.Right:
                        return true;
                    default:
                        break;
                }
            }

            return base.ProcessCmdKey(ref msg, keyData);
        }
    }
}

Note there's a Public Proerty that implements a boolean flag here that Controls whether Arrow Keys are enabled or disabled, and I've set it to 'true by default. You can change that in your run-time code, or at design-time as you wish.

Posted 25-Nov-14 2:05am

BillWoodruff

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syed shanu · Accepted Answer · 2014-11-24T17:56:00

Hi check this code Hope this will help you.

C#

 Boolean ibMouseClicked = false;
//Toolstrip Combobox selected index change event.Here i check for the boolean value if  its false it will exit from the method with out executing the remaining code.
        private void toolStripComboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (!ibMouseClicked)
            {
                return;
            }
            MessageBox.Show("Now the Mouse is presed");
            if (toolStripComboBoxLeft.Text != "...")
            {
            }
        }
//Toolstrip Key up event i set status as false
        private void toolStripComboBox1_KeyUp(object sender, KeyEventArgs e)
        {
            ibMouseClicked = false;
        }
       //Toolstrip Key down event i set status as false
        private void toolStripComboBox1_KeyDown(object sender, KeyEventArgs e)
        {
            ibMouseClicked = false;
        }
//Toolstrip Key press event i set status as false
        private void toolStripComboBox1_KeyPress(object sender, KeyPressEventArgs e)
        {
            ibMouseClicked = false;
        }
//Toolstrip Mouse Down event i set status as false
        private void toolStripComboBox1_MouseDown(object sender, MouseEventArgs e)
        {
            ibMouseClicked = true;
        }