如何用datagrid访问数据库(sqlsever)

string mysql="selsect.....";
this.PowerDataGrid1.QueryCommand =mysql;
this.PowerDataGrid1.DataBind();

datagrid可以用自动生成字段，
也可以制定字段

我的字段是自动生成的，连接的是sqlsever的pubs的Authors表
在pageload中：sqldataadapter1.fill(dataset11,"Authors");
datagrid1.databind();

你有用web matrix么，让他自动生成连接字符串啊。如果你只是要让数据显示在datagrid中的话，可以把他的自动生成列属性设置为true，然后使用web matrix的select方法选择你想要显示的数据就ok了。当然，这是最基本的应用了。检查一下吧，看有没拼写错误，基本的语法错误，这类问题最多。

明显绑定后没有fill值
也有可能ds中没有数据
看看row是不是》1

<%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="DataGrid3.WebForm1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>WebForm1</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<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: 112px; POSITION: absolute; TOP: 80px" runat="server" Width="360px" Height="216px" DataSource="<%# dataSet11 %>" DataKeyField="au_id" DataMember="authors">
<Columns>
<asp:BoundColumn DataField="au_id" SortExpression="au_id" HeaderText="au_id"></asp:BoundColumn>
<asp:BoundColumn DataField="au_lname" SortExpression="au_lname" HeaderText="au_lname"></asp:BoundColumn>
<asp:BoundColumn DataField="au_fname" SortExpression="au_fname" HeaderText="au_fname"></asp:BoundColumn>
</Columns>
</asp:DataGrid></FONT>
</form>
</body>
</HTML>-----------------------------------------------------------------------------------------

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 DataGrid3
{
/// <summary>
/// WebForm1 的摘要说明。
/// </summary>
public class WebForm1 : System.Web.UI.Page
{
protected System.Web.UI.WebControls.DataGrid DataGrid1;
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.Data.SqlClient.SqlCommand sqlDeleteCommand1;
protected System.Data.SqlClient.SqlConnection sqlConnection1;
protected DataGrid3.DataSet1 dataSet11;

private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
sqlDataAdapter1.Fill(dataSet11,"authors");
DataGrid1.DataBind();
} #region Web 窗体设计器生成的代码
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.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.sqlConnection1 = new System.Data.SqlClient.SqlConnection();
this.dataSet11 = new DataGrid3.DataSet1();
((System.ComponentModel.ISupportInitialize)(this.dataSet11)).BeginInit();
//
// 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", "authors", new System.Data.Common.DataColumnMapping[] {
new System.Data.Common.DataColumnMapping("au_id", "au_id"),
new System.Data.Common.DataColumnMapping("au_lname", "au_lname"),
new System.Data.Common.DataColumnMapping("au_fname", "au_fname")})});
this.sqlDataAdapter1.UpdateCommand = this.sqlUpdateCommand1;
//
// sqlSelectCommand1
//
this.sqlSelectCommand1.CommandText = "SELECT au_id, au_lname, au_fname FROM authors";
this.sqlSelectCommand1.Connection = this.sqlConnection1;
//
// sqlInsertCommand1
//
this.sqlInsertCommand1.CommandText = "INSERT INTO authors(au_id, au_lname, au_fname) VALUES (@au_id, @au_lname, @au_fna" +
"me); SELECT au_id, au_lname, au_fname FROM authors WHERE (au_id = @au_id)";
this.sqlInsertCommand1.Connection = this.sqlConnection1;
this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@au_id", System.Data.SqlDbType.VarChar, 11, "au_id"));
this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@au_lname", System.Data.SqlDbType.VarChar, 40, "au_lname"));
this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@au_fname", System.Data.SqlDbType.VarChar, 20, "au_fname"));
//
// sqlUpdateCommand1
//
this.sqlUpdateCommand1.CommandText = "UPDATE authors SET au_id = @au_id, au_lname = @au_lname, au_fname = @au_fname WHE" +
"RE (au_id = @Original_au_id) AND (au_fname = @Original_au_fname) AND (au_lname =" +
" @Original_au_lname); SELECT au_id, au_lname, au_fname FROM authors WHERE (au_id" +
" = @au_id)";
this.sqlUpdateCommand1.Connection = this.sqlConnection1;
this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@au_id", System.Data.SqlDbType.VarChar, 11, "au_id"));
this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@au_lname", System.Data.SqlDbType.VarChar, 40, "au_lname"));
this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@au_fname", System.Data.SqlDbType.VarChar, 20, "au_fname"));
this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_au_id", System.Data.SqlDbType.VarChar, 11, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "au_id", System.Data.DataRowVersion.Original, null));
this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_au_fname", System.Data.SqlDbType.VarChar, 20, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "au_fname", System.Data.DataRowVersion.Original, null));
this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_au_lname", System.Data.SqlDbType.VarChar, 40, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "au_lname", System.Data.DataRowVersion.Original, null));
//
// sqlDeleteCommand1
//
this.sqlDeleteCommand1.CommandText = "DELETE FROM authors WHERE (au_id = @Original_au_id) AND (au_fname = @Original_au_" +
"fname) AND (au_lname = @Original_au_lname)";
this.sqlDeleteCommand1.Connection = this.sqlConnection1;
this.sqlDeleteCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_au_id", System.Data.SqlDbType.VarChar, 11, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "au_id", System.Data.DataRowVersion.Original, null));
this.sqlDeleteCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_au_fname", System.Data.SqlDbType.VarChar, 20, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "au_fname", System.Data.DataRowVersion.Original, null));
this.sqlDeleteCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_au_lname", System.Data.SqlDbType.VarChar, 40, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "au_lname", System.Data.DataRowVersion.Original, null));
//
// sqlConnection1
//
this.sqlConnection1.ConnectionString = "workstation id=\"SY-ZL-0\";packet size=4096;user id=netsy;data source=\"SY-ZL-0\";per" +
"sist security info=True;initial catalog=pubs;password=siyi2004";
//
// dataSet11
//
this.dataSet11.DataSetName = "DataSet1";
this.dataSet11.Locale = new System.Globalization.CultureInfo("zh-CN");
this.Load += new System.EventHandler(this.Page_Load);
((System.ComponentModel.ISupportInitialize)(this.dataSet11)).EndInit(); }
#endregion
}
}

调试易

如何用datagrid访问数据库(sqlsever)

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