<%@ Page Language="C#" AutoEventWireup="true" CodeFile="GridviewPage.aspx.cs" Inherits="GridviewPage" %> Gridview Page
1 using System; 2 using System.Data; 3 using System.Configuration; 4 using System.Collections; 5 using System.Web; 6 using System.Web.Security; 7 using System.Web.UI; 8 using System.Web.UI.WebControls; 9 using System.Web.UI.WebControls.WebParts;10 using System.Web.UI.HtmlControls;11 /// 12 /// Author:匆匆 Blog:http://www.cnblogs.com/huangjianhuakarl/13 /// Gridview自定义分页页码14 /// 15 public partial class GridviewPage : System.Web.UI.Page16 {17 protected void Page_Load(object sender, EventArgs e)18 {19 if (!IsPostBack)20 {21 bind();22 }23 }24 /// 25 /// 绑定数据26 /// 27 public void bind()28 {29 string sqlStr = "select * from Employee";30 DataSet myds = Common.dataSet(sqlStr);31 GridView1.DataSource = myds;32 GridView1.DataKeyNames = new string[] { "ID" };33 GridView1.DataBind();34 this.ddlCurrentPage.Items.Clear();35 for (int i = 1; i <= this.GridView1.PageCount; i++)36 {37 this.ddlCurrentPage.Items.Add(i.ToString());38 }39 this.ddlCurrentPage.SelectedIndex = this.GridView1.PageIndex;40 }41 /// 42 /// 在 GridView 控件中的某个行被绑定到一个数据记录时发生。此事件通常用于在某个行被绑定到数据时修改该行的内容。43 /// 44 /// 45 /// 46 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)47 {48 this.lblCurrentPage.Text = string.Format("当前第{0}页/总共{1}页", this.GridView1.PageIndex + 1, this.GridView1.PageCount); 49 50 //遍历所有行设置边框样式51 foreach (TableCell tc in e.Row.Cells)52 {53 tc.Attributes["style"] = "border-color:Black";54 }55 //用索引来取得编号56 if (e.Row.RowIndex != -1)57 {58 int id = GridView1.PageIndex * GridView1.PageSize + e.Row.RowIndex + 1;59 e.Row.Cells[0].Text = id.ToString();60 }61 62 }63 /// 64 /// 重新绑定65 /// 66 /// 67 /// 68 protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)69 {70 this.GridView1.PageIndex = this.ddlCurrentPage.SelectedIndex;71 bind();72 }73 protected void lnkbtnFrist_Click(object sender, EventArgs e)74 {75 this.GridView1.PageIndex = 0;76 bind();77 }78 protected void lnkbtnPre_Click(object sender, EventArgs e)79 {80 if (this.GridView1.PageIndex > 0)81 {82 this.GridView1.PageIndex = this.GridView1.PageIndex - 1;83 bind();84 }85 }86 protected void lnkbtnNext_Click(object sender, EventArgs e)87 {88 if (this.GridView1.PageIndex < this.GridView1.PageCount)89 {90 this.GridView1.PageIndex = this.GridView1.PageIndex + 1;91 bind();92 }93 }94 protected void lnkbtnLast_Click(object sender, EventArgs e)95 {96 this.GridView1.PageIndex = this.GridView1.PageCount;97 bind();98 } 99 }
91 单元格中触发的事件，并且两个窗体之间的传值 92 private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e) 93 { 94 string name=dataGridView1[1, dataGridView1.CurrentCell.RowIndex].Value.ToString(); 95 string psw=dataGridView1[2, dataGridView1.CurrentCell.RowIndex].Value.ToString(); 96 Form1 form1 = new Form1();//这里是两个窗体之间传递值，需要设置两个字段 97 form1.name = name; 98 form1.psw = psw; 99 form1.Show(); 100 } 101 获得当前单元格的内容也就是当前行第一列的值 102 Console.WriteLine(DataGridView1.CurrentCell.Value); 103 // 取得当前单元格的列 Index 104 Console.WriteLine(DataGridView1.CurrentCell.ColumnIndex); 105 // 取得当前单元格的行 Index 106 Console.WriteLine(DataGridView1.CurrentCell.RowIndex); 107 ' 删除名为"Column1"的列 108 DataGridView1.Columns.Remove("Column1"); 109 ' 删除第一列 110 DataGridView1.Columns.RemoveAt(0); 111 移除当前行 112 this.dataGridView1.Rows.Remove(this.dataGridView1.CurrentRow); 113 ' 删除第一行 114 DataGridView1.Rows.RemoveAt(0); 115 获得此格的内容 116 DataGridView1【0，0】; 117 dataGridView1.AlternatingRowsDefaultCellStyle.BackColor = Color.MistyRose;//偶数行显示 118 dataGridView1.RowsDefaultCellStyle.BackColor = Color.MistyRose;//奇数行显示 119 显示选择的行 120 128 DataGridView的异常处理 129 1、 CellFormatting事件，每绘制一个单元格系统自动触发此事件 130 private void buttonCellValidating_Click(object sender, EventArgs e) 131 { 132 dataGridView1.CellValidating += 133 new DataGridViewCellValidatingEventHandler(CellValidating); 134 MessageBox.Show(""); 135 136 } 137 private void CellValidating(object sender, DataGridViewCellValidatingEventArgs e) 138 { 139 string errorMessage = ""; 140 if (dataGridView1.Columns[e.ColumnIndex].Name == "学号") 141 { 142 if (e.FormattedValue == null) 143 { 144 errorMessage = "不允许空值"; 145 } 146 else 147 { 148 string xuehao = e.FormattedValue.ToString(); 149 if (xuehao.Length != 8) 150 { 151 errorMessage = "学号必须为8位数字"; 152 } 153 else 154 { 155 for (int i = 0; i < xuehao.Length; i++) 156 { 157 if (char.IsDigit(xuehao[i]) == false) 158 { 159 errorMessage = "学号必须为8位数字"; 160 break; 161 } 162 } 163 } 164 } 165 } 166 2、DataError事件，如果用户输入了不符合数据源规定的内容，系统在验证数据时就会产生异常 167 3、CellVaildating事件，当用户提交数据时响应这些事件 168 169 170 171 172 if (errorMessage.Length > 0) 173 { 174 MessageBox.Show(errorMessage, string.Format("第{0}行第{1}列有错", 175 e.RowIndex, e.ColumnIndex)); 176 dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].ErrorText = errorMessage;//如果用户输入的值无效就可以触发这些事件 177 } 178 else 179 { 180 dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].ErrorText = null; 181 }
private void dataGridView1_MouseClick(object sender, MouseEventArgs e) { DataGridView.HitTestInfo h = dataGridView1.HitTest(e.X, e.Y); if (h.Type== DataGridViewHitTestType.Cell || h.Type == DataGridViewHitTestType.RowHeader) { dataGridView1.Rows[h.RowIndex].Selected = true; //鼠标点时可以获得一行数据，不管点任何一行都是一行数据 int processeId = (int)dataGridView1.CurrentRow.Cells[0].Value; ShowProcessInfo(Process.GetProcessById(processeId)); } }