批量更新数据
点击次数：25 次 发布日期：2008-11-27 01:37:15 作者：源代码网
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一个update的例子: <%@ Page language="C#" Debug="true" %> <%@ Import Namespace="System.Data" %> <%@ Import Namespace="System.Data.SqlClient" %> <script runat="server"> void Page_Load(object sender, System.EventArgs e){ SqlConnection conn = new SqlConnection("server=localhost;uid=sa;pwd=kingapex;database=tourmsg"); SqlDataAdapter da = new SqlDataAdapter(); SqlCommand cmd = new SqlCommand("select top 2 id,groupnumber as groupnumber1 from [grouptb]",conn); DataSet ds = new DataSet(); conn.Open(); da.SelectCommand = cmd; da.Fill(ds,"grouptb"); for(int i=0;i<ds.Tables["grouptb"].Rows.Count;i++) { Response.Write(ds.Tables["grouptb"].Rows[1]+"<br>"); } for(int i=0;i<ds.Tables["grouptb"].Rows.Count;i++) { ds.Tables["grouptb"].Rows.BeginEdit(); ds.Tables["grouptb"].Rows[1] = "wangfengrr"; ds.Tables["grouptb"].Rows.EndEdit(); } String updateCmd = "Update grouptb set groupnumber = @groupnumber Where Id=@id"; cmd = new SqlCommand(updateCmd, conn); cmd.Parameters.Add("@id",SqlDbType.Int,4,"id"); cmd.Parameters.Add("@groupnumber",SqlDbType.Char,10,"groupnumber1"); da.UpdateCommand = cmd; da.Update(ds,"grouptb"); ds.AcceptChanges(); conn.Close(); } </script> 下面是一个insert 的例子: <%@ Page language="C#" Debug="true" %> <%@ Import Namespace="System.Data" %> <%@ Import Namespace="System.Data.SqlClient" %> <script runat="server"> void Page_Load(object sender, System.EventArgs e){ //建立DataTable数据源 DataTable Dt = new DataTable(); DataRow Dr; Dt.Columns.Add(new DataColumn("groupnumber")); for(int j =0;j<3;j++){ Dr=Dt.NewRow(); Dr[0]="groupnumber"+j.ToString(); Dt.Rows.Add(Dr); } SqlConnection conn = new SqlConnection("server=localhost;uid=sa;pwd=kingapex;database=tourmsg"); SqlDataAdapter MyAdapter = new SqlDataAdapter(); //建立InsertCommand StringBuilder sb = new StringBuilder(""); sb.Append("INSERT grouptb (groupnumber) VALUES("); sb.Append("@groupnumber)"); MyAdapter.InsertCommand = new SqlCommand(); MyAdapter.InsertCommand.CommandText = sb.ToString(); MyAdapter.InsertCommand.Connection = conn; SqlParameter p1 = new SqlParameter("@groupnumber", SqlDbType.VarChar, 40); p1.SourceVersion = DataRowVersion.Current; p1.SourceColumn = "groupnumber"; // or p1.SourceColumn = Dt.Columns[0].ColumnName; MyAdapter.InsertCommand.Parameters.Add(p1); //Update MyAdapter.Update(Dt); conn.Close(); } </script>  源代码网供稿. |
