DataGridView使用BindingNavigator实现简单分页功能
这篇文章主要介绍了DataGridView使用BindingNavigator实现简单分页功能，本文主要是通过借用BindingNavigator空壳，文中通过实例代码讲解的非常详细,需要的朋友可以参考下
上篇文章给大家介绍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：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 | 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 = 20; pageIndex = 0; SetPage(); } //设置页 private void SetPage() { //总记录数 totalCount = 0; BindPage(pageSize, pageIndex + 1, out totalCount); //总页数 if (totalCount % pageSize == 0) pageCount = totalCount / pageSize; else pageCount = totalCount / pageSize + 1; //当前页及总页数 txtCurrentPage.Text = (pageIndex + 1).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 = 0; #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[0].Value = pageSize; param[1].Value = pageIndex; param[2].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[2].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 = 0; 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 < 0) { pageIndex = 0; } 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 - 1) { pageIndex = pageCount - 1; } SetPage(); } /// <summary> /// 末页 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void bindingNavigatorMoveLastItem_Click(object sender, EventArgs e) { pageIndex = pageCount - 1; 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 >= 48 && e.KeyChar <= 57) || e.KeyChar == 8 || e.KeyChar == 13 || e.KeyChar == 127) { e.Handled = false; if (e.KeyChar == 13) { 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) - 1; SetPage(); } |
3、SQL Server创建存储过程PageTest：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | CREATE PROCEDURE [dbo].[PageTest] @PageSize INT, @PageIndex INT, @TotalCount INT OUTPUTASBEGIN --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。
总结
以上所述是小编给大家介绍的DataGridView使用BindingNavigator实现简单分页功能，希望对大家有所帮助