[初学者求救]c#数据访问

Question

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;namespace WindowsApplication1
{
/// <summary>
/// Form2 的摘要说明。
/// </summary>
public class WorkerForm : System.Windows.Forms.Form
{
private System.Windows.Forms.Label label1;
private System.Windows.Forms.DataGrid dataGrid1;
private System.Windows.Forms.Button btnSave;
private System.Windows.Forms.Button btnEdit;
private System.Windows.Forms.Button btnCancel;
private System.Windows.Forms.Button btnExit;
private System.Data.SqlClient.SqlDataAdapter sqlDataAdapter1;
private System.Data.SqlClient.SqlCommand sqlSelectCommand1;
private System.Data.SqlClient.SqlCommand sqlInsertCommand1;
private System.Data.SqlClient.SqlCommand sqlUpdateCommand1;
private System.Data.SqlClient.SqlCommand sqlDeleteCommand1;
private System.Data.SqlClient.SqlConnection sqlConnection1;
private WindowsApplication1.WorkerDataSet workerDataSet1;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null; public WorkerForm()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent(); //
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
} /// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if(components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
} #region Windows 窗体设计器生成的代码
/// <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.label1 = new System.Windows.Forms.Label();
this.dataGrid1 = new System.Windows.Forms.DataGrid();
this.workerDataSet1 = new WindowsApplication1.WorkerDataSet();
this.btnSave = new System.Windows.Forms.Button();
this.btnEdit = new System.Windows.Forms.Button();
this.btnCancel = new System.Windows.Forms.Button();
this.btnExit = new System.Windows.Forms.Button();
this.sqlDataAdapter1 = new System.Data.SqlClient.SqlDataAdapter();
this.sqlDeleteCommand1 = new System.Data.SqlClient.SqlCommand();
this.sqlConnection1 = new System.Data.SqlClient.SqlConnection();
this.sqlInsertCommand1 = new System.Data.SqlClient.SqlCommand();
this.sqlSelectCommand1 = new System.Data.SqlClient.SqlCommand();
this.sqlUpdateCommand1 = new System.Data.SqlClient.SqlCommand();
((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.workerDataSet1)).BeginInit();
this.SuspendLayout();
// 
// label1
// 
this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 10F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
this.label1.Location = new System.Drawing.Point(104, 48);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(424, 23);
this.label1.TabIndex = 0;
this.label1.Text = "Click on the Edit Botton to load the records";
// 
// dataGrid1
// 
this.dataGrid1.DataMember = "tblWorker";
this.dataGrid1.DataSource = this.workerDataSet1;
this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
this.dataGrid1.Location = new System.Drawing.Point(72, 80);
this.dataGrid1.Name = "dataGrid1";
this.dataGrid1.Size = new System.Drawing.Size(504, 136);
this.dataGrid1.TabIndex = 1;
this.dataGrid1.Navigate += new System.Windows.Forms.NavigateEventHandler(this.dataGrid1_Navigate);
// 
// workerDataSet1
//

Answer 1

this.workerDataSet1.DataSetName = "WorkerDataSet";
this.workerDataSet1.Locale = new System.Globalization.CultureInfo("zh-CN");
// 
// btnSave
// 
this.btnSave.Location = new System.Drawing.Point(64, 248);
this.btnSave.Name = "btnSave";
this.btnSave.TabIndex = 2;
this.btnSave.Text = "&Save";
// 
// btnEdit
// 
this.btnEdit.Location = new System.Drawing.Point(184, 248);
this.btnEdit.Name = "btnEdit";
this.btnEdit.TabIndex = 3;
this.btnEdit.Text = "&Edit";
this.btnEdit.Click += new System.EventHandler(this.btnEdit_Click);
// 
// btnCancel
// 
this.btnCancel.Location = new System.Drawing.Point(312, 248);
this.btnCancel.Name = "btnCancel";
this.btnCancel.TabIndex = 4;
this.btnCancel.Text = "&Cancel";
// 
// btnExit
// 
this.btnExit.Location = new System.Drawing.Point(448, 248);
this.btnExit.Name = "btnExit";
this.btnExit.TabIndex = 5;
this.btnExit.Text = "E&xit";
// 
// 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", "tblWorker", new System.Data.Common.DataColumnMapping[] {
   new System.Data.Common.DataColumnMapping("WorkerID", "WorkerID"),
   new System.Data.Common.DataColumnMapping("Name", "Name")})});
this.sqlDataAdapter1.UpdateCommand = this.sqlUpdateCommand1;
this.sqlDataAdapter1.RowUpdated += new System.Data.SqlClient.SqlRowUpdatedEventHandler(this.sqlDataAdapter1_RowUpdated);
// 
// sqlDeleteCommand1
// 
this.sqlDeleteCommand1.CommandText = "DELETE FROM tblWorker WHERE (WorkerID = @Original_WorkerID) AND (Name = @Original" +
"_Name OR @Original_Name IS NULL AND Name IS NULL)";
this.sqlDeleteCommand1.Connection = this.sqlConnection1;
this.sqlDeleteCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_WorkerID", System.Data.SqlDbType.Int, 4, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "WorkerID", System.Data.DataRowVersion.Original, null));
this.sqlDeleteCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_Name", System.Data.SqlDbType.VarChar, 50, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "Name", System.Data.DataRowVersion.Original, null));
// 
// sqlConnection1
// 
this.sqlConnection1.ConnectionString = "workstation id=ASKA;packet size=4096;user id=sa;data source=\"(local)\";persist sec" +
"urity info=False;initial catalog=CMS";
this.sqlConnection1.InfoMessage += new System.Data.SqlClient.SqlInfoMessageEventHandler(this.sqlConnection1_InfoMessage);
// 
// sqlInsertCommand1
// 
this.sqlInsertCommand1.CommandText = "INSERT INTO tblWorker(WorkerID, Name) VALUES (@WorkerID, @Name); SELECT WorkerID," +
" Name FROM tblWorker WHERE (WorkerID = @WorkerID)";
this.sqlInsertCommand1.Connection = this.sqlConnection1;
this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@WorkerID", System.Data.SqlDbType.Int, 4, "WorkerID"));
this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Name", System.Data.SqlDbType.VarChar, 50, "Name"));
// 
// sqlSelectCommand1
// 
this.sqlSelectCommand1.CommandText = "SELECT WorkerID, Name FROM tblWorker";
this.sqlSelectCommand1.Connection = this.sqlConnection1;
// 
// sqlUpdateCommand1
// 
this.sqlUpdateCommand1.CommandText = "UPDATE tblWorker SET WorkerID = @WorkerID, Name = @Name WHERE (WorkerID = @Origin" +
"al_WorkerID) AND (Name = @Original_Name OR @Original_Name IS NULL AND Name IS NU" +
"LL); SELECT WorkerID, Name FROM tblWorker WHERE (WorkerID = @WorkerID)";
this.sqlUpdateCommand1.Connection = this.sqlConnection1;
this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@WorkerID", System.Data.SqlDbType.Int, 4, "WorkerID"));
this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Name", System.Data.SqlDbType.VarChar, 50, "Name"));
this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_WorkerID", System.Data.SqlDbType.Int, 4, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "WorkerID", System.Data.DataRowVersion.Original, null));
this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_Name", System.Data.SqlDbType.VarChar, 50, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "Name", System.Data.DataRowVersion.Original, null));
// 
// WorkerForm
// 
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(632, 342);
this.Controls.Add(this.btnExit);
this.Controls.Add(this.btnCancel);
this.Controls.Add(this.btnEdit);
this.Controls.Add(this.btnSave);
this.Controls.Add(this.dataGrid1);
this.Controls.Add(this.label1);
this.Name = "WorkerForm";
this.Text = "WorkerForm";
this.Load += new System.EventHandler(this.WorkerForm_Load);
((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.workerDataSet1)).EndInit();
this.ResumeLayout(false); }
#endregion private void WorkerForm_Load(object sender, System.EventArgs e)
{

} private void sqlConnection1_InfoMessage(object sender, System.Data.SqlClient.SqlInfoMessageEventArgs e)
{

} private void btnEdit_Click(object sender, System.EventArgs e)
{
workerDataSet1.Clear();
sqlDataAdapter1.Fill(workerDataSet1);
} private void sqlDataAdapter1_RowUpdated(object sender, System.Data.SqlClient.SqlRowUpdatedEventArgs e)
{

} private void dataGrid1_Navigate(object sender, System.Windows.Forms.NavigateEventArgs ne)
{

}
}
}

Answer 2

实际上就是我建立了一个datagrid  想把dataset中的内容显示出来，而且是照书上抄的。