最近做一项目,遇到了批量更新数据,代码 如下:
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>

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