MessagesControl.cs

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

namespace SeciControls
{
    public partial class MessagesControl : UserControl
    {
        //Set up event and delegates for stopping/starting error thread while a question is asked
        public event QuestionHandler OnQuestionAsked;
        public delegate void QuestionHandler();

        public event QuestionHandler OnQuestionAnswered;


        public MessagesControl()
        {
            InitializeComponent();
        }

        private void MessagesControl_Load(object sender, EventArgs e)
        {
            //Disable datagrid sorting
            foreach (DataGridViewColumn column in dgv1.Columns)
            {
                column.SortMode = DataGridViewColumnSortMode.NotSortable;
            }
        }

        public void ClearMessages()
        {
            dgv1.Rows.Clear();
        }

        public void RemoveAllErrorMessages()
        {
            //Only remove error messages, not questions!

            for (int i = 0; i < dgv1.RowCount; ++i)
            {
                //Check it is not a question
                if (dgv1.Rows[i].Cells[0].Value.ToString() != "True")
                {
                    //Reply with acknowledged
                    Seci.Standard.MessageQueue.SendReply(dgv1.Rows[i].Cells["colMessage"].Value.ToString(), dgv1.Rows[i].Cells["colSource"].Value.ToString(), true);
                }
            }
        }

        public void AddMessages(Seci.SerialisableList<Seci.Standard.MessageInfo> messages)
        {
            //Clear messages
            dgv1.Rows.Clear();

            for (int i = 0; i < messages.Count; ++i)
            {

                //if wait for response = true then it is a question, else is an error
                Boolean question;
                String type = "";

                //There is a hidden column called Question, which is used to check whether the row,
                //double clicked on is a question or an error.

                //And there are two hidden columns called yes and no which contain what should be
                //written on the question buttons

                if (messages[i].WaitForResponse)
                {
                    //Question
                    question = true;
                    type = "Question";
                }
                else
                {
                    //Error
                    question = false;
                    type = "Error";
                }

                dgv1.Rows.Insert(0, question, type, messages[i].TimeAdded.ToShortDateString(), messages[i].TimeAdded.ToShortTimeString(), messages[i].Count ,messages[i].VIName, messages[i].Message, messages[i].YesText, messages[i].NoText);
            }
        }

        public void ShowSelectedMessage()
        {
            if (dgv1.CurrentRow != null)
            {
                dgv1_CellDoubleClick(null, null);
            }
        }

        private void dgv1_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
        {
            if (dgv1.CurrentRow != null)
            {
                //Stop Error thread
                if (OnQuestionAsked != null)
                {
                    OnQuestionAsked();
                }

                //See if user double clicked on a question
                if (dgv1.CurrentRow.Cells[0].Value.ToString() == "True")
                {
                    int rownum = dgv1.CurrentRow.Index;

                    //It is a question, so pop up message box.
                    String question = "Source: " + dgv1.Rows[rownum].Cells["colSource"].Value.ToString() + Environment.NewLine + Environment.NewLine + dgv1.Rows[rownum].Cells["colMessage"].Value.ToString();
                    Generic_PopUp popup = new Generic_PopUp("Question", question, dgv1.Rows[rownum].Cells["colYes"].Value.ToString(), dgv1.Rows[rownum].Cells["colNo"].Value.ToString());
                    if (popup.ShowDialog() == DialogResult.Yes)
                    {
                        //Answered in the positive
                        Seci.Standard.MessageQueue.SendReply(dgv1.Rows[rownum].Cells["colMessage"].Value.ToString(), dgv1.Rows[rownum].Cells["colSource"].Value.ToString(), true);
                    }
                    else
                    {
                        //Answered in the negative
                        Seci.Standard.MessageQueue.SendReply(dgv1.Rows[rownum].Cells["colMessage"].Value.ToString(), dgv1.Rows[rownum].Cells["colSource"].Value.ToString(), false);
                    }
                }
                else
                {
                    int rownum = dgv1.CurrentRow.Index;

                    //It is an error message, so pop up message box.
                    String message = "Source: " + dgv1.Rows[rownum].Cells["colSource"].Value.ToString() + Environment.NewLine + Environment.NewLine + dgv1.Rows[rownum].Cells["colMessage"].Value.ToString();
                    Generic_PopUp popup = new Generic_PopUp("LabVIEW Message", message, "Delete", "Cancel");
                    if (popup.ShowDialog() == DialogResult.Yes)
                    {
                        //Remove the message
                        Seci.Standard.MessageQueue.SendReply(dgv1.Rows[rownum].Cells["colMessage"].Value.ToString(), dgv1.Rows[rownum].Cells["colSource"].Value.ToString(), true);
                    }
                }

                //Restart Error thread
                if (OnQuestionAnswered != null)
                {
                    OnQuestionAnswered();
                }
            }
        }

        
    }
}