using System; using System.Collections; using System.ComponentModel; using System.Data; using System.Drawing; using System.Web; using System.Web.SessionState; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls;namespace test { /// <summary> /// WebForm1 的摘要说明。 /// </summary> public class WebForm1 : System.Web.UI.Page { protected System.Data.SqlClient.SqlConnection sqlConnection1; protected System.Data.SqlClient.SqlDataAdapter sqlDataAdapter1; protected System.Data.SqlClient.SqlCommand sqlSelectCommand1; protected System.Data.SqlClient.SqlCommand sqlInsertCommand1; protected System.Data.SqlClient.SqlCommand sqlUpdateCommand1; protected System.Web.UI.WebControls.DataGrid DataGrid1; protected test.DataSet1 dataSet11; protected System.Data.SqlClient.SqlCommand sqlDeleteCommand1;
private void Page_Load(object sender, System.EventArgs e) { // 在此处放置用户代码以初始化页面 } #region Web Form Designer generated code override protected void OnInit(EventArgs e) { // // CODEGEN:该调用是 ASP.NET Web 窗体设计器所必需的。 // InitializeComponent(); base.OnInit(e); }
/// <summary> /// 设计器支持所需的方法 - 不要使用代码编辑器修改 /// 此方法的内容。 /// </summary> private void InitializeComponent() { this.sqlConnection1 = new System.Data.SqlClient.SqlConnection(); this.sqlDataAdapter1 = new System.Data.SqlClient.SqlDataAdapter(); this.sqlSelectCommand1 = new System.Data.SqlClient.SqlCommand(); this.sqlInsertCommand1 = new System.Data.SqlClient.SqlCommand(); this.sqlUpdateCommand1 = new System.Data.SqlClient.SqlCommand(); this.sqlDeleteCommand1 = new System.Data.SqlClient.SqlCommand(); this.dataSet11 = new test.DataSet1(); ((System.ComponentModel.ISupportInitialize)(this.dataSet11)).BeginInit(); // // sqlConnection1 // this.sqlConnection1.ConnectionString = "data source=192.168.0.1;initial catalog=lucheng;persist security info=False;use" + "r id=lucheng;workstation id=ZHANGCHENGJUN;packet size=4096"; // // sqlDataAdapter1 // this.sqlDataAdapter1.DeleteCommand = this.sqlDeleteCommand1; this.sqlDataAdapter1.InsertCommand = this.sqlInsertCommand1; this.sqlDataAdapter1.SelectCommand = this.sqlSelectCommand1; this.sqlDataAdapter1.TableMappings.AddRange(new System.Data.Common.DataTableMapping[] { new System.Data.Common.DataTableMapping("Table", "information", new System.Data.Common.DataColumnMapping[] { new System.Data.Common.DataColumnMapping("id", "id"), new System.Data.Common.DataColumnMapping("content", "content")})}); this.sqlDataAdapter1.UpdateCommand = this.sqlUpdateCommand1; // // sqlSelectCommand1 // this.sqlSelectCommand1.CommandText = "SELECT id, content FROM information"; this.sqlSelectCommand1.Connection = this.sqlConnection1; // // sqlInsertCommand1 // this.sqlInsertCommand1.CommandText = "INSERT INTO information(content) VALUES (@content); SELECT id, content FROM infor" + "mation WHERE (id = @@IDENTITY)"; this.sqlInsertCommand1.Connection = this.sqlConnection1; this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@content", System.Data.SqlDbType.VarChar, 50, "content")); // // sqlUpdateCommand1 // this.sqlUpdateCommand1.CommandText = "UPDATE information SET content = @content WHERE (id = @Original_id) AND (content " + "= @Original_content OR @Original_content IS NULL AND content IS NULL); SELECT id" + ", content FROM information WHERE (id = @id)"; this.sqlUpdateCommand1.Connection = this.sqlConnection1; this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@content", System.Data.SqlDbType.VarChar, 50, "content")); this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_id", System.Data.SqlDbType.Int, 4, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "id", System.Data.DataRowVersion.Original, null)); this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_content", System.Data.SqlDbType.VarChar, 50, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "content", System.Data.DataRowVersion.Original, null)); this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@id", System.Data.SqlDbType.Int, 4, "id")); // // sqlDeleteCommand1 // this.sqlDeleteCommand1.CommandText = "DELETE FROM information WHERE (id = @Original_id) AND (content = @Original_conten" + "t OR @Original_content IS NULL AND content IS NULL)"; this.sqlDeleteCommand1.Connection = this.sqlConnection1; this.sqlDeleteCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_id", System.Data.SqlDbType.Int, 4, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "id", System.Data.DataRowVersion.Original, null)); this.sqlDeleteCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_content", System.Data.SqlDbType.VarChar, 50, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "content", System.Data.DataRowVersion.Original, null)); // // dataSet11 // this.dataSet11.DataSetName = "DataSet1"; this.dataSet11.Locale = new System.Globalization.CultureInfo("zh-CN"); this.dataSet11.Namespace = "http://www.tempuri.org/DataSet1.xsd"; this.Load += new System.EventHandler(this.Page_Load); ((System.ComponentModel.ISupportInitialize)(this.dataSet11)).EndInit(); } #endregion } }
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;namespace test
{
/// <summary>
/// WebForm1 的摘要说明。
/// </summary>
public class WebForm1 : System.Web.UI.Page
{
protected System.Data.SqlClient.SqlConnection sqlConnection1;
protected System.Data.SqlClient.SqlDataAdapter sqlDataAdapter1;
protected System.Data.SqlClient.SqlCommand sqlSelectCommand1;
protected System.Data.SqlClient.SqlCommand sqlInsertCommand1;
protected System.Data.SqlClient.SqlCommand sqlUpdateCommand1;
protected System.Web.UI.WebControls.DataGrid DataGrid1;
protected test.DataSet1 dataSet11;
protected System.Data.SqlClient.SqlCommand sqlDeleteCommand1;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
} #region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN:该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.sqlConnection1 = new System.Data.SqlClient.SqlConnection();
this.sqlDataAdapter1 = new System.Data.SqlClient.SqlDataAdapter();
this.sqlSelectCommand1 = new System.Data.SqlClient.SqlCommand();
this.sqlInsertCommand1 = new System.Data.SqlClient.SqlCommand();
this.sqlUpdateCommand1 = new System.Data.SqlClient.SqlCommand();
this.sqlDeleteCommand1 = new System.Data.SqlClient.SqlCommand();
this.dataSet11 = new test.DataSet1();
((System.ComponentModel.ISupportInitialize)(this.dataSet11)).BeginInit();
//
// sqlConnection1
//
this.sqlConnection1.ConnectionString = "data source=192.168.0.1;initial catalog=lucheng;persist security info=False;use" +
"r id=lucheng;workstation id=ZHANGCHENGJUN;packet size=4096";
//
// sqlDataAdapter1
//
this.sqlDataAdapter1.DeleteCommand = this.sqlDeleteCommand1;
this.sqlDataAdapter1.InsertCommand = this.sqlInsertCommand1;
this.sqlDataAdapter1.SelectCommand = this.sqlSelectCommand1;
this.sqlDataAdapter1.TableMappings.AddRange(new System.Data.Common.DataTableMapping[] {
new System.Data.Common.DataTableMapping("Table", "information", new System.Data.Common.DataColumnMapping[] {
new System.Data.Common.DataColumnMapping("id", "id"),
new System.Data.Common.DataColumnMapping("content", "content")})});
this.sqlDataAdapter1.UpdateCommand = this.sqlUpdateCommand1;
//
// sqlSelectCommand1
//
this.sqlSelectCommand1.CommandText = "SELECT id, content FROM information";
this.sqlSelectCommand1.Connection = this.sqlConnection1;
//
// sqlInsertCommand1
//
this.sqlInsertCommand1.CommandText = "INSERT INTO information(content) VALUES (@content); SELECT id, content FROM infor" +
"mation WHERE (id = @@IDENTITY)";
this.sqlInsertCommand1.Connection = this.sqlConnection1;
this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@content", System.Data.SqlDbType.VarChar, 50, "content"));
//
// sqlUpdateCommand1
//
this.sqlUpdateCommand1.CommandText = "UPDATE information SET content = @content WHERE (id = @Original_id) AND (content " +
"= @Original_content OR @Original_content IS NULL AND content IS NULL); SELECT id" +
", content FROM information WHERE (id = @id)";
this.sqlUpdateCommand1.Connection = this.sqlConnection1;
this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@content", System.Data.SqlDbType.VarChar, 50, "content"));
this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_id", System.Data.SqlDbType.Int, 4, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "id", System.Data.DataRowVersion.Original, null));
this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_content", System.Data.SqlDbType.VarChar, 50, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "content", System.Data.DataRowVersion.Original, null));
this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@id", System.Data.SqlDbType.Int, 4, "id"));
//
// sqlDeleteCommand1
//
this.sqlDeleteCommand1.CommandText = "DELETE FROM information WHERE (id = @Original_id) AND (content = @Original_conten" +
"t OR @Original_content IS NULL AND content IS NULL)";
this.sqlDeleteCommand1.Connection = this.sqlConnection1;
this.sqlDeleteCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_id", System.Data.SqlDbType.Int, 4, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "id", System.Data.DataRowVersion.Original, null));
this.sqlDeleteCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_content", System.Data.SqlDbType.VarChar, 50, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "content", System.Data.DataRowVersion.Original, null));
//
// dataSet11
//
this.dataSet11.DataSetName = "DataSet1";
this.dataSet11.Locale = new System.Globalization.CultureInfo("zh-CN");
this.dataSet11.Namespace = "http://www.tempuri.org/DataSet1.xsd";
this.Load += new System.EventHandler(this.Page_Load);
((System.ComponentModel.ISupportInitialize)(this.dataSet11)).EndInit(); }
#endregion
}
}
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>WebForm1</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio 7.0">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<FONT face="宋体">
<asp:DataGrid id=DataGrid1 style="Z-INDEX: 101; LEFT: 273px; POSITION: absolute; TOP: 112px" runat="server" DataSource="<%# dataSet11 %>">
</asp:DataGrid></FONT>
</form>
</body>
</HTML>
先1\open connection;
2\new sqlDataAdapter;
3\new DataSet;
4\ Fill;
5\bind;
SqlConnection myConnection= new SqlConnection(str);
string cmd = "select * from student where name='dh'";
SqlDataAdapter myCommand = new SqlDataAdapter(cmd,myConnection);
DataSet ds=new DataSet();
myCommand.Fill(ds," ");
DG1.DataSource = ds.Tables["num"].DefaultView;
DG1.DataBind();
这个我知道,我也不是ASP.net初学者,但是是vs.net的初学者,我过去一直用记事本写程序,但现在为了提高效率就用vs.net了
我是拖放一个SQLconnection,sqldataadapter,dataset,并设置参数
再拖放一个datagrid,设置数据源
但结果就无法显示