接上一篇《DataGridView使用自定义控件实现简单分页功能》，本篇使用BindingNavigator来实现简单分页功能。其实也只是借用了一个BindingNavigator空壳，
实现原理和代码与上一篇几乎一样，实现方法如下：
1、新建一个WinForm程序，命名为BindingNavigatorMain，并拖入一个DataGridView控件及一个BindingNavigator控件。在BindingNavigator右下角弹窗中添加
一个Button(转到)，BindingNavigator的样式如下：
2、BindingNavigatorMain的代码如下：
private int pageSize; //每页显示记录数
private int pageIndex; //页序号
private int totalCount; //总记录数
private int pageCount; //总页数 public BindingNavigatorMain()
{
InitializeComponent();
} private void BindingNavigatorMain_Load(object sender, EventArgs e)
{
pageSize = ;
pageIndex = ;
SetPage();
} //设置页
private void SetPage()
{
//总记录数
totalCount = ;
BindPage(pageSize, pageIndex + , out totalCount); //总页数
if (totalCount % pageSize == )
pageCount = totalCount / pageSize;
else
pageCount = totalCount / pageSize + ; //当前页及总页数
txtCurrentPage.Text = (pageIndex + ).ToString();
lblTotalPage.Text = "共 " + pageCount.ToString() + " 页"; //BindingNavigator数据源不进行BindingSource赋值，但恢复控件可用性。
bindingNavigatorMoveFirstItem.Enabled = true;
bindingNavigatorMovePreviousItem.Enabled = true;
txtCurrentPage.Enabled = true;
lblTotalPage.Enabled = true;
bindingNavigatorMoveNextItem.Enabled = true;
bindingNavigatorMoveLastItem.Enabled = true;
} /// <summary>
/// 绑定页
/// </summary>
/// <param name="pageSize">每页显示记录数</param>
/// <param name="pageIndex">页序号</param>
/// <param name="totalCount">总记录数</param>
private void BindPage(int pageSize, int pageIndex, out int totalCount)
{
SqlConnection conn = null;
SqlCommand cmd = null;
totalCount = ; #region 连接数据库测试
try
{
//数据库连接
conn = new SqlConnection("server=.;database=DB_TEST;Uid=sa;pwd=********;");
conn.Open(); //SqlCommand
cmd = new SqlCommand();
cmd.Connection = conn;
cmd.CommandText = "PageTest";
cmd.CommandType = CommandType.StoredProcedure; SqlParameter[] param =
{
new SqlParameter("@PageSize",SqlDbType.Int),
new SqlParameter("@PageIndex",SqlDbType.Int),
new SqlParameter("@TotalCount",SqlDbType.Int)
};
param[].Value = pageSize;
param[].Value = pageIndex;
param[].Direction = ParameterDirection.Output;
cmd.Parameters.AddRange(param); //DataTable
DataTable dt = new DataTable("MF_MO");
dt.Columns.Add(new DataColumn("MO_NO", typeof(String)));
dt.Columns.Add(new DataColumn("MRP_NO", typeof(String)));
dt.Columns.Add(new DataColumn("QTY", typeof(Decimal)));
dt.Columns.Add(new DataColumn("BIL_NO", typeof(String))); #region 方法一：SqlDataReader
SqlDataReader dr = cmd.ExecuteReader();
dt.Load(dr, LoadOption.PreserveChanges);
dr.Close();
totalCount = (int)param[].Value;
dataGridView1.DataSource = dt;
#endregion #region #方法二：SqlDataAdapter
//SqlDataAdapter da = new SqlDataAdapter();
//da.SelectCommand = cmd;
//dt.BeginLoadData();
//da.Fill(dt);
//dt.EndLoadData();
//totalCount = (int)param[2].Value;
//dataGridView1.DataSource = dt;
#endregion
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
finally
{
conn.Close();
cmd.Dispose();
}
#endregion
} /// <summary>
/// 首页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void bindingNavigatorMoveFirstItem_Click(object sender, EventArgs e)
{
pageIndex = ;
SetPage();
} /// <summary>
/// 上一页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void bindingNavigatorMovePreviousItem_Click(object sender, EventArgs e)
{
pageIndex--;
if (pageIndex < )
{
pageIndex = ;
}
SetPage();
} /// <summary>
/// 下一页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void bindingNavigatorMoveNextItem_Click(object sender, EventArgs e)
{
pageIndex++;
if (pageIndex > pageCount - )
{
pageIndex = pageCount - ;
}
SetPage();
} /// <summary>
/// 末页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void bindingNavigatorMoveLastItem_Click(object sender, EventArgs e)
{
pageIndex = pageCount - ;
SetPage();
} /// <summary>
/// 只能按0-9、Delete、Enter、Backspace键
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void txtCurrentPage_KeyPress(object sender, KeyPressEventArgs e)
{
if ((e.KeyChar >= && e.KeyChar <= ) || e.KeyChar == || e.KeyChar == || e.KeyChar == )
{
e.Handled = false;
if (e.KeyChar == )
{
Go();
}
}
else
{
e.Handled = true;
}
} /// <summary>
/// 指定页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnGo_Click(object sender, EventArgs e)
{
Go();
} private void Go()
{
if (string.IsNullOrEmpty(txtCurrentPage.Text))
{
MessageBox.Show("指定页不能为空。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
txtCurrentPage.Focus();
return;
} if (int.Parse(txtCurrentPage.Text) > pageCount)
{
MessageBox.Show("指定页已超过总页数。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
txtCurrentPage.Focus();
return;
} pageIndex = int.Parse(txtCurrentPage.Text) - ;
SetPage();
}
3、SQL Server创建存储过程PageTest：
CREATE PROCEDURE [dbo].[PageTest]
@PageSize INT,
@PageIndex INT,
@TotalCount INT OUTPUT
AS
BEGIN
--总记录数
SELECT @TotalCount=COUNT(1) FROM MF_MO --记录返回(使用动态SQL绕开参数嗅探问题，效率大幅度提升。)
DECLARE @SQL NVARCHAR(1000)
SET @SQL=
'SELECT TOP ('+CONVERT(VARCHAR(32),@PageSize)+') MO_NO,MRP_NO,QTY,BIL_NO '+
'FROM MF_MO A '+
'WHERE NOT EXISTS (SELECT 1 FROM (SELECT TOP ('+CONVERT(VARCHAR(32),(@PageIndex-1)*@PageSize)+') MO_NO FROM MF_MO ORDER BY MO_NO) B WHERE A.MO_NO=B.MO_NO) '+
'ORDER BY MO_NO'
EXEC (@SQL)
END
4、执行程序：
好了，分享就到此结束了，希望对有此需要的人有一些帮助。