WinForm自定义分页控件实现Datagridview分页效果附引用Demo
最终运行效果图
自定义控件源码
可根据实际需求更改翻页按钮样式、总页数、每页多少条等属性
public partial class WinFormPager : UserControl
{
#region Members
private string _BtnTextFirst = "首页";
private string _BtnTextLast = "末页";
private string _BtnTextNext = "下页";
private string _BtnTextPrevious = "上页";
private DisplayStyleEnum _DisplayStyle = DisplayStyleEnum.图片;
private string _JumpText = "跳转";
private int _PageCount;
private int _PageIndex = 1;
private int _PageSize = 10;
private int _RecordCount;
private TextImageRalitionEnum _TextImageRalition = TextImageRalitionEnum.图片显示在文字前方;
private string PagerText = "共{0}条,第{1}页,共{2}页,每页{3}条";
public enum DisplayStyleEnum
{
图片 = 1,
图片及文字 = 3,
文字 = 2
}
public delegate void EventHandler(object sender, EventArgs e);
public enum TextImageRalitionEnum
{
图片显示在文字后方 = 4,
图片显示在文字前方 = 3,
图片显示在文字上方 = 1,
图片显示在文字下方 = 2
}
[Description("更改页面索引事件"), Category("自定义事件")]
public event EventHandler PageIndexChanged;
[Category("自定义属性"), DefaultValue("首页"), Description("首页按钮文字,当DisplayStyle=文字或DisplayStyle=图片及文字时生效")]
public string BtnTextFirst
{
get
{
return this._BtnTextFirst;
}
set
{
this._BtnTextFirst = value;
this.SetDisplayStyle();
}
}
[Description("末页按钮文字,当DisplayStyle=文字或DisplayStyle=图片及文字时生效"), DefaultValue("末页"), Category("自定义属性")]
public string BtnTextLast
{
get
{
return this._BtnTextLast;
}
set
{
this._BtnTextLast = value;
this.SetDisplayStyle();
}
}
[DefaultValue("下一页"), Category("自定义属性"), Description("下一页按钮文字,当DisplayStyle=文字或DisplayStyle=图片及文字时生效")]
public string BtnTextNext
{
get
{
return this._BtnTextNext;
}
set
{
this._BtnTextNext = value;
this.SetDisplayStyle();
}
}
[DefaultValue("上一页"), Description("上一页按钮文字,当DisplayStyle=文字或DisplayStyle=图片及文字时生效"), Category("自定义属性")]
public string BtnTextPrevious
{
get
{
return this._BtnTextPrevious;
}
set
{
this._BtnTextPrevious = value;
this.SetDisplayStyle();
}
}
[Category("自定义属性"), DefaultValue(1), Description("显示类型：图片、文字、图片及文字")]
public DisplayStyleEnum DisplayStyle
{
get
{
return this._DisplayStyle;
}
set
{
this._DisplayStyle = value;
this.SetDisplayStyle();
}
}
[Description("跳转按钮文字"), Category("自定义属性"), DefaultValue("跳转")]
public string JumpText
{
get
{
return this._JumpText;
}
set
{
this._JumpText = value;
this.btnToPageIndex.Text = this._JumpText;
}
}
private int PageCount
{
get
{
return this._PageCount;
}
}
[DefaultValue(1), Category("自定义属性"), Description("当前显示的页数")]
public int PageIndex
{
get
{
return this._PageIndex;
}
set
{
this._PageIndex = value;
}
}
[DefaultValue(10), Description("每页显示的记录数"), Category("自定义属性")]
public int PageSize
{
get
{
return this._PageSize;
}
set
{
if (value <= 1)
{
value = 10;
}
this._PageSize = value;
this.SetLabelLocation();
}
}
[Description("要分页的总记录数"), Category("自定义属性")]
public int RecordCount
{
get
{
return this._RecordCount;
}
set
{
this._RecordCount = value;
}
}
[DefaultValue(3), Description("图片和文字显示相对位置,当DisplayStyle=文字或DisplayStyle=图片及文字时生效"), Category("自定义属性")]
public TextImageRalitionEnum TextImageRalitions
{
get
{
return this._TextImageRalition;
}
set
{
this._TextImageRalition = value;
this.SetDisplayStyle();
}
}
#endregion
public WinFormPager()
{
InitializeComponent();
}
#region Methods
protected int GetPageCount(int RecordCounts, int PageSizes)
{
int num = 0;
string str = (Convert.ToDouble(RecordCounts) / Convert.ToDouble(PageSizes)).ToString();
if (str.IndexOf(".") < 0)
{
return Convert.ToInt32(str);
}
string[] strArray = Regex.Split(str, @"\.", RegexOptions.IgnoreCase);
if (!string.IsNullOrEmpty(strArray[1].ToString()))
{
num = Convert.ToInt32(strArray[0]) + 1;
}
return num;
}
protected void SetBtnEnabled()
{
if (this._PageIndex == 1)
{
this.btnFirst.Enabled = false;
this.btnPrevious.Enabled = false;
this.btnNext.Enabled = true;
this.btnLast.Enabled = true;
//this.btnNext.Enabled = (this._PageCount <= 1) ? false : true;
//this.btnLast.Enabled = (this._PageCount <= 1) ? false : true;
}
else if ((this._PageIndex > 1) && (this._PageIndex < this._PageCount))
{
this.btnFirst.Enabled = true;
this.btnPrevious.Enabled = true;
this.btnNext.Enabled = true;
this.btnLast.Enabled = true;
}
else if (this._PageIndex == this._PageCount)
{
this.btnFirst.Enabled = true;
this.btnPrevious.Enabled = true;
this.btnNext.Enabled = false;
this.btnLast.Enabled = false;
}
}
private void SetDisplayStyle()
{
TextImageRelation imageBeforeText = TextImageRelation.ImageBeforeText;
if (this.TextImageRalitions == TextImageRalitionEnum.图片显示在文字上方)
{
imageBeforeText = TextImageRelation.ImageAboveText;
}
else if (this.TextImageRalitions == TextImageRalitionEnum.图片显示在文字下方)
{
imageBeforeText = TextImageRelation.TextAboveImage;
}
else if (this.TextImageRalitions == TextImageRalitionEnum.图片显示在文字前方)
{
imageBeforeText = TextImageRelation.ImageBeforeText;
}
else if (this.TextImageRalitions == TextImageRalitionEnum.图片显示在文字后方)
{
imageBeforeText = TextImageRelation.TextBeforeImage;
}
if (this.DisplayStyle == DisplayStyleEnum.图片)
{
this.btnFirst.ImageList = this.btnPrevious.ImageList = this.btnNext.ImageList = this.btnLast.ImageList = this.imglstPager;
this.btnFirst.ImageIndex = 0;
this.btnPrevious.ImageIndex = 1;
this.btnNext.ImageIndex = 2;
this.btnLast.ImageIndex = 3;
this.btnFirst.Text = this.btnPrevious.Text = this.btnNext.Text = this.btnLast.Text = "";
this.btnFirst.TextImageRelation = this.btnPrevious.TextImageRelation = this.btnNext.TextImageRelation = this.btnLast.TextImageRelation = TextImageRelation.Overlay;
}
else if (this.DisplayStyle == DisplayStyleEnum.文字)
{
this.btnFirst.ImageList = this.btnPrevious.ImageList = this.btnNext.ImageList = (ImageList)(this.btnLast.ImageList = null);
this.btnFirst.Text = string.IsNullOrEmpty(this.BtnTextFirst) ? "首页" : this.BtnTextFirst;
this.btnPrevious.Text = string.IsNullOrEmpty(this.BtnTextPrevious) ? "上页" : this.BtnTextPrevious;
this.btnNext.Text = string.IsNullOrEmpty(this.BtnTextNext) ? "下页" : this.BtnTextNext;
this.btnLast.Text = string.IsNullOrEmpty(this.BtnTextLast) ? "末页" : this.BtnTextLast;
this.btnFirst.TextImageRelation = this.btnPrevious.TextImageRelation = this.btnNext.TextImageRelation = this.btnLast.TextImageRelation = TextImageRelation.Overlay;
}
else if (this.DisplayStyle == DisplayStyleEnum.图片及文字)
{
this.btnFirst.ImageList = this.btnPrevious.ImageList = this.btnNext.ImageList = this.btnLast.ImageList = this.imglstPager;
this.btnFirst.ImageIndex = 0;
this.btnPrevious.ImageIndex = 1;
this.btnNext.ImageIndex = 2;
this.btnLast.ImageIndex = 3;
this.btnFirst.Text = string.IsNullOrEmpty(this.BtnTextFirst) ? "首页" : this.BtnTextFirst;
this.btnPrevious.Text = string.IsNullOrEmpty(this.BtnTextPrevious) ? "上页" : this.BtnTextPrevious;
this.btnNext.Text = string.IsNullOrEmpty(this.BtnTextNext) ? "下页" : this.BtnTextNext;
this.btnLast.Text = string.IsNullOrEmpty(this.BtnTextLast) ? "末页" : this.BtnTextLast;
this.btnFirst.TextImageRelation = this.btnPrevious.TextImageRelation = this.btnNext.TextImageRelation = this.btnLast.TextImageRelation = imageBeforeText;
}
}
protected void SetLabelLocation()
{
this.btnFirst.Left = (this.lblPager.Left + this.lblPager.Width) + 10;
this.btnPrevious.Left = this.btnFirst.Left + this.btnFirst.Width;
this.btnNext.Left = this.btnPrevious.Left + this.btnPrevious.Width;
this.btnLast.Left = this.btnNext.Left + this.btnNext.Width;
this.lbPre.Left = (this.btnLast.Left + this.btnLast.Width) + 10;
this.txtToPageIndex.Left = this.lbPre.Left + this.lbPre.Width;
this.lbEnd.Left = this.txtToPageIndex.Left + this.txtToPageIndex.Width;
this.btnToPageIndex.Left = this.lbEnd.Left + this.lbEnd.Width;
}
private void SetPagerText()
{
string[] strArray = new string[] { this.RecordCount.ToString(), this.PageIndex.ToString(), this.PageCount.ToString(), this.PageSize.ToString() };
this.lblPager.Text = string.Format(this.PagerText, (object[])strArray);
}
#endregion
#region Events
private void CustomEvent(object sender, EventArgs e)
{
try
{
this.PageIndexChanged(sender, e);
}
catch (Exception)
{
MessageBox.Show("未找到PageIndexChanged事件！");
}
}
private void btnFirst_Click(object sender, EventArgs e)
{
this._PageIndex = 1;
this.SetPagerText();
this.SetBtnEnabled();
this.SetLabelLocation();
this.CustomEvent(sender, e);
}
private void btnLast_Click(object sender, EventArgs e)
{
this._PageIndex = this._PageCount;
this.SetPagerText();
this.SetBtnEnabled();
this.SetLabelLocation();
this.CustomEvent(sender, e);
}
private void btnNext_Click(object sender, EventArgs e)
{
int num = this._PageIndex;
try
{
int num2 = Convert.ToInt32(num) + 1;
if (num2 >= this._RecordCount)
{
num2 = this._RecordCount;
}
this._PageIndex = num2;
this.SetPagerText();
this.SetBtnEnabled();
this.SetLabelLocation();
this.CustomEvent(sender, e);
}
catch (Exception)
{
}
}
private void btnPrevious_Click(object sender, EventArgs e)
{
int num = this._PageIndex;
try
{
int num2 = Convert.ToInt32(num) - 1;
if (num2 <= 0)
{
num2 = 1;
}
this._PageIndex = num2;
this.SetPagerText();
this.SetBtnEnabled();
this.SetLabelLocation();
this.CustomEvent(sender, e);
}
catch (Exception)
{
}
}
private void btnToPageIndex_Click(object sender, EventArgs e)
{
string text = this.txtToPageIndex.Text;
int num = this._PageIndex;
if (string.IsNullOrEmpty(text))
{
num = 1;
this.txtToPageIndex.Text = "1";
}
else
{
num = Convert.ToInt32(text);
if (num > this._PageCount)
{
num = this._PageCount;
this.txtToPageIndex.Text = this._PageCount.ToString();
}
else
{
this._PageIndex = num;
this.SetPagerText();
this.SetBtnEnabled();
this.SetLabelLocation();
this.CustomEvent(sender, e);
}
}
}
private void WinFormPager_Load(object sender, EventArgs e)
{
this.SetBtnEnabled();
this.btnToPageIndex.Text = this._JumpText;
}
private void WinFormPager_Paint(object sender, PaintEventArgs e)
{
this._PageCount = this.GetPageCount(this._RecordCount, this._PageSize);
this.SetPagerText();
this.SetDisplayStyle();
this.SetLabelLocation();
}
private void WinFormPager_MouseMove(object sender, MouseEventArgs e)
{
foreach (Control control in base.Controls)
{
if (control is Button)
{
Button button = (Button)control;
button.BackColor = Color.Transparent;
button.FlatAppearance.BorderColor = Color.White;
button.FlatAppearance.MouseDownBackColor = Color.Transparent;
button.FlatAppearance.MouseOverBackColor = Color.Transparent;
}
}
}
#endregion
#region AutoGeneratee
#endregion
}
引用控件Demo源码
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
BindGridview(0);
BindPager();
}
public void BindPager()
{
string sql = string.Format("select * from Test ");
SqlCommand cmd = new SqlCommand(sql, DBhelper.conn());
DBhelper.conn().Open();
DataTable dt = new DataTable();
SqlDataAdapter da = new SqlDataAdapter(sql, DBhelper.conn());
da.Fill(dt);
Pager1.PageSize = 5;
Pager1.RecordCount = dt.Rows.Count;
Pager1.PageIndex = 1;
Pager1.Show();
}
public void BindGridview(int pageindex)
{
string sql = string.Format("select top 5* from where LogID not in (select top (@pageindex*5)LogID from SysOperationLog)");
SqlParameter[] sqlpa =
{
new SqlParameter("@pageindex",pageindex),
};
SqlCommand cmd = new SqlCommand(sql, DBhelper.conn());
DBhelper.conn().Open();
DataTable dt = new DataTable();
SqlDataAdapter da = new SqlDataAdapter(sql, DBhelper.conn());
if (sqlpa != null)
{
da.SelectCommand.Parameters.AddRange(sqlpa);
}
da.Fill(dt);
dataGridView1.DataSource = dt;
}
private void Pager1_PageIndexChanged(object sender, EventArgs e)
{
BindGridview(Pager1.PageIndex-1);
}
}