C#用户控件开发

 

控件名称：

chkSelect

label1

BeginDatePicker

EndDatePicker

控件代码如下(直接从UserControl继承) 

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 CustomControlSample
{
    [ToolboxBitmap(typeof(System.Windows.Forms.DateTimePicker))]
    public partial class DateTimeBeginEnd : UserControl
    {
        public DateTimeBeginEnd()
        {
            InitializeComponent();
            this.FCheckboxVisible = true;
            this.BeginDatePicker.Format = System.Windows.Forms.DateTimePickerFormat.Custom;
            this.EndDatePicker.Format = System.Windows.Forms.DateTimePickerFormat.Custom;
            this.BeginDatePicker.CustomFormat = "yyyy-MM-dd HH:mm:ss";
            this.EndDatePicker.CustomFormat = "yyyy-MM-dd HH:mm:ss";
            this.BeginDatePicker.Left=nBeginDateLeft;
        }

        private int nBeginDateLeft=25;

        private DateTime FBeginDate;
        private DateTime FEndDate;
        private Boolean FCheckDateTime;
        private Boolean FCheckboxVisible;
        private Boolean FCheckboxChecked;
        private DateTimePickerFormat FDateTimeFormat;
        private string FDateTimeCustomFormat;

        public delegate void CustomFormatChangeEventHandle(object sender, EventArgs arg);
        public event CustomFormatChangeEventHandle FormatChanged;

        private void OnFormatChanged(EventArgs e)
        {
            if (this.FormatChanged!=null)
            {
                this.FormatChanged(this,e);
            }
        }

        public DateTime BeginDate 
        {
            get
            {
                this.FBeginDate = this.BeginDatePicker.Value;
                return this.FBeginDate;
            }
            set
            {
                this.FBeginDate = value;
                this.BeginDatePicker.Value = this.FBeginDate;
            }
        }

        public DateTime EndDate
        {
            get
            {
                this.FEndDate = this.EndDatePicker.Value;
                return this.FEndDate;
            }
            set
            {
                this.FEndDate = value;
                this.EndDatePicker.Value =this.FEndDate;
            }
        }

        public Boolean CheckDateTime
        {
            get
            {
                this.FCheckDateTime = this.chkSelect.Checked;
                return this.FCheckDateTime;
            }
            set
            {
                this.FCheckDateTime = value;
                this.chkSelect.Checked = this.FCheckDateTime;
            }
        }

        public Boolean CheckboxVisible
        {
            get
            {
                this.FCheckboxVisible = this.chkSelect.Visible;
                return this.FCheckboxVisible;
            }
            set
            {
                this.FCheckboxVisible = value;
                this.chkSelect.Visible = this.FCheckboxVisible;
            }
        }

        public DateTimePickerFormat DateTimeFormat
        {
            get
            {
                this.FDateTimeFormat = this.BeginDatePicker.Format;
                return this.FDateTimeFormat;
            }
            set
            {
                if (FDateTimeFormat != value)
                {
                    this.FDateTimeFormat = value;
                    this.BeginDatePicker.Format = this.FDateTimeFormat;
                    this.EndDatePicker.Format = this.FDateTimeFormat;
                    OnFontChanged(null);
                }
            }
        }

        public string DateTimeCustomFormat
        {
            get
            {
                this.FDateTimeCustomFormat = this.BeginDatePicker.CustomFormat;
                return this.FDateTimeCustomFormat;
            }
            set
            {
                this.FDateTimeCustomFormat = value;
                this.BeginDatePicker.CustomFormat = this.FDateTimeCustomFormat;
                this.EndDatePicker.CustomFormat = this.FDateTimeCustomFormat;
            }
        }

        public Boolean CheckboxChecked
        {
            get
            {
                this.FCheckboxChecked = this.chkSelect.Checked;
                return this.FCheckboxChecked;
            }
            set
            {
                this.FCheckboxChecked = value;
                this.chkSelect.Checked = this.FCheckboxChecked;
            }
        }

        public event EventHandler BeginDatePickerChange;
        public event EventHandler EndDatePickerChange;
        public event EventHandler CheckBoxClick;

        protected void OnBeginDateChange(EventArgs arg)
        {
            if (BeginDatePickerChange != null)
                BeginDatePickerChange(this, arg);
        }

        protected void OnEndDateChange(EventArgs arg)
        {
            if (EndDatePickerChange != null)
                EndDatePickerChange(this, arg);
        }

        protected void OnCheckBoxChange(EventArgs arg)
        {
            if (CheckBoxClick != null)
                CheckBoxClick(this,arg);
        }

        private void EndDatePicker_ValueChanged(object sender, EventArgs e)
        {
            OnEndDateChange(e);
        }

        private void BeginDatePicker_ValueChanged(object sender, EventArgs e)
        {
            OnBeginDateChange(e);
        }

        private void chkSelect_Click(object sender, EventArgs e)
        {
            OnCheckBoxChange(e);
        }

        private void EndDatePicker_FormatChanged(object sender, EventArgs e)
        {
            OnFormatChanged(e);
            TextChange();
        }

        private void BeginDatePicker_FormatChanged(object sender, EventArgs e)
        {
            OnFormatChanged(e);
            TextChange();
        }

        private void EndDatePicker_FontChanged(object sender, EventArgs e)
        {
            OnFormatChanged(e);
            TextChange();
            //if (System.ComponentModel.LicenseManager.UsageMode == System.ComponentModel.LicenseUsageMode.Designtime)
            //{
            //    //returnFlag = true;  DesignMode设计时状态
            //}
            //else if (System.Diagnostics.Process.GetCurrentProcess().ProcessName.ToUpper().Equals("DEVENV"))
            //{
            //    //returnFlag = true;
            //}  
        }

        private void TextChange()
        {
            this.BeginDatePicker.Width = TextRenderer.MeasureText(this.BeginDatePicker.Value.ToString(this.BeginDatePicker.CustomFormat), this.BeginDatePicker.Font).Width+37;
            this.EndDatePicker.Width = TextRenderer.MeasureText(this.EndDatePicker.Value.ToString(this.EndDatePicker.CustomFormat), this.EndDatePicker.Font).Width + 37;
            this.label1.Left =this.BeginDatePicker.Left+this.BeginDatePicker.Width+2;
            this.EndDatePicker.Left = this.label1.Left + this.label1.Width + 2;
        }

        private void BeginDatePicker_FontChanged(object sender, EventArgs e)
        {
            OnFormatChanged(e);
            TextChange();
        }

        private void DateTimeBeginEnd_Resize(object sender, EventArgs e)
        {
            //int nLabelLeft = 0;
            //int nEndDateLeft = 0;
            //nLabelLeft = this.BeginDatePicker.Left + this.BeginDatePicker.Width + 2;
            //this.label1.Left = nLabelLeft;
            //nEndDateLeft = this.label1.Left + this.label1.Width + 2;
            //this.EndDatePicker.Left = nEndDateLeft;
            this.BeginDatePicker.Width=(this.Width-25-label1.Width-6)/2;
            this.EndDatePicker.Width=this.BeginDatePicker.Width;
            this.label1.Left=this.BeginDatePicker.Left + this.BeginDatePicker.Width + 2;
            this.EndDatePicker.Left =this.label1.Left + this.label1.Width + 2;
        }
    }
}