asp.net web中GridView的多種使用方法（詳解）
阿新 • • 發佈：2019-02-15
靈活使用asp.net中gridview控制元件的方法有很多種，本文內容很富，希望大家都能有所收穫。
1.GridView無程式碼分頁排序：
效果圖：
小提示：
1.AllowSorting設為True，aspx程式碼中是AllowSorting="True"；
2.預設1頁10條，如果要修改每頁條數，修改PageSize即可，在aspx程式碼中是PageSize="12"。
3.預設的是單向排序的，右擊GridView彈出“屬性”，選擇AllowSorting為True即可。
2.GridView選中，編輯，取消，刪除：
效果圖：
後臺程式碼：
你可以使用sqlhelper,本文沒用。程式碼如下：
| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980 | using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class _Default : System.Web.UI.Page{SqlConnection sqlcon;SqlCommand sqlcom;string strCon = "Data Source=(local);Database=資料庫名;Uid=帳號;Pwd=密碼";protected void Page_Load(object sender, EventArgs e){if (!IsPostBack){bind();}}protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e){GridView1.EditIndex = e.NewEditIndex;bind();}//刪除protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e){string sqlstr = "delete from 表 where id='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";sqlcon = new SqlConnection(strCon);sqlcom = new SqlCommand(sqlstr,sqlcon);sqlcon.Open();sqlcom.ExecuteNonQuery();sqlcon.Close();bind();}//更新protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e){sqlcon = new SqlConnection(strCon);string sqlstr = "update 表 set 欄位1='"+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',欄位2='"+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "',欄位3='"+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where id='"+ GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";sqlcom=new SqlCommand(sqlstr,sqlcon);sqlcon.Open();sqlcom.ExecuteNonQuery();sqlcon.Close();GridView1.EditIndex = -1;bind();}//取消protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e){GridView1.EditIndex = -1;bind();}//繫結public void bind(){string sqlstr = "select * from 表";sqlcon = new SqlConnection(strCon);SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);DataSet myds = new DataSet();sqlcon.Open();myda.Fill(myds, "表");GridView1.DataSource = myds;GridView1.DataKeyNames = new string[] { "id" };//主鍵GridView1.DataBind();sqlcon.Close();}} |
前臺主要程式碼：
?| 12345678910111213141516171819 | ... ...<asp:GridView ID="GridView1" runat="server" CellPadding="4"ForeColor="#333333" GridLines="None" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit"><FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" /><Columns><asp:BoundField DataField="身份證號碼" HeaderText="使用者ID" ReadOnly="True" /><asp:BoundField DataField="姓名" HeaderText="使用者姓名" /><asp:BoundField DataField="員工性別" HeaderText="性別" /><asp:BoundField DataField="家庭住址" HeaderText="家庭住址" /><asp:CommandField HeaderText="選擇" ShowSelectButton="True" /><asp:CommandField HeaderText="編輯" ShowEditButton="True" /><asp:CommandField HeaderText="刪除" ShowDeleteButton="True" /></Columns><RowStyle ForeColor="#000066" /><SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /><PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" /><HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /></asp:GridView> |
3.GridView正反雙向排序：
效果圖：點姓名各2次的排序，點其他也一樣可以。
後臺程式碼：
| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859 | using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class Default3 : System.Web.UI.Page{SqlConnection sqlcon;string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd=";protected void Page_Load(object sender, EventArgs e){if (!IsPostBack){ViewState["SortOrder"] = "身份證號碼";ViewState["OrderDire"] = "ASC";bind();}}protected void GridView1_Sorting(object sender, GridViewSortEventArgs e){string sPage = e.SortExpression;if (ViewState["SortOrder"].ToString() == sPage){if (ViewState["OrderDire"].ToString() == "Desc")ViewState["OrderDire"] = "ASC";elseViewState["OrderDire"] = "Desc";}else{ViewState["SortOrder"] = e.SortExpression;}bind();}public void bind(){string sqlstr = "select top 5 * from 飛狐工作室";sqlcon = new SqlConnection(strCon);SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);DataSet myds = new DataSet();sqlcon.Open();myda.Fill(myds, "飛狐工作室");DataView view = myds.Tables["飛狐工作室"].DefaultView;string sort = (string)ViewState["SortOrder"] + " " + (string)ViewState["OrderDire"];view.Sort = sort;GridView1.DataSource = view;GridView1.DataBind();sqlcon.Close();}} |
前臺主要程式碼：
| 123456789101112131415 | <asp:GridView ID="GridView1" runat="server" AllowSorting="True"CellPadding="3" Font-Size="9pt" OnSorting="GridView1_Sorting" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px"><FooterStyle BackColor="White" ForeColor="#000066" /><Columns><asp:BoundField DataField="身份證號碼" HeaderText="使用者ID" SortExpression="身份證號碼" /><asp:BoundField DataField="姓名" HeaderText="使用者姓名" SortExpression="姓名"/><asp:BoundField DataField="員工性別" HeaderText="性別" SortExpression="員工性別"/><asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/></Columns><RowStyle ForeColor="#000066" /><SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /><PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" /><HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /></asp:GridView> |
4.GridView和下拉選單DropDownList結合：
效果圖：
後臺程式碼：
| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253 | using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class Default4 : System.Web.UI.Page{SqlConnection sqlcon;string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd=sa";protected void Page_Load(object sender, EventArgs e){DropDownList ddl;if (!IsPostBack){string sqlstr = "select top 5 * from 飛狐工作室";sqlcon = new SqlConnection(strCon);SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);DataSet myds = new DataSet();sqlcon.Open();myda.Fill(myds, "飛狐工作室");GridView1.DataSource = myds;GridView1.DataBind();for (int i = 0; i <= GridView1.Rows.Count - 1; i++){DataRowView mydrv = myds.Tables["飛狐工作室"].DefaultView[i];if (Convert.ToString(mydrv["員工性別"]).Trim() == "True"){ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1");ddl.SelectedIndex = 0;}if (Convert.ToString(mydrv["員工性別"]).Trim() == "False"){ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1");ddl.SelectedIndex = 1;}}sqlcon.Close();}}public SqlDataReader ddlbind(){string sqlstr = "select distinct 員工性別 from 飛狐工作室";sqlcon = new SqlConnection(strCon);SqlCommand sqlcom = new SqlCommand(sqlstr, sqlcon);sqlcon.Open();return sqlcom.ExecuteReader();} |
前臺主要程式碼：
| 1234567891011121314151617181920 | <asp:GridView ID="GridView1" runat="server" AllowSorting="True"CellPadding="3" Font-Size="9pt" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px"><FooterStyle BackColor="White" ForeColor="#000066" /><Columns><asp:BoundField DataField="身份證號碼" HeaderText="使用者ID" SortExpression="身份證號碼" /><asp:BoundField DataField="姓名" HeaderText="使用者姓名" SortExpression="姓名"/><asp:TemplateField HeaderText="員工性別"><ItemTemplate><asp:DropDownList ID="DropDownList1" runat="server" DataSource='<%# ddlbind()%>' DataValueField="員工性別" DataTextField="員工性別"></asp:DropDownList></ItemTemplate></asp:TemplateField><asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/></Columns><RowStyle ForeColor="#000066" /><SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /><PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" /><HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /></asp:GridView> |
5.GridView和CheckBox結合：
效果圖：
後臺程式碼：
?| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758 |