publishcompany.cs

《C#数据库项目案例导航》一书的配套光盘

			this.sqlDeleteCommand1.Connection = this.sqlConnection1;
			this.sqlDeleteCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_PublishName", System.Data.SqlDbType.VarChar, 50, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "PublishName", System.Data.DataRowVersion.Original, null));
			this.sqlDeleteCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_PbulishEmail", System.Data.SqlDbType.VarChar, 30, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "PbulishEmail", System.Data.DataRowVersion.Original, null));
			this.sqlDeleteCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_PublishAddress", System.Data.SqlDbType.VarChar, 50, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "PublishAddress", System.Data.DataRowVersion.Original, null));
			this.sqlDeleteCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_PublishPhoneNo", System.Data.SqlDbType.VarChar, 15, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "PublishPhoneNo", System.Data.DataRowVersion.Original, null));
			// 
			// sqlInsertCommand1
			// 
			this.sqlInsertCommand1.CommandText = @"INSERT INTO PublishCompany(PublishName, PublishAddress, PublishPhoneNo, PbulishEmail) VALUES (@PublishName, @PublishAddress, @PublishPhoneNo, @PbulishEmail); SELECT PublishName, PublishAddress, PublishPhoneNo, PbulishEmail FROM PublishCompany WHERE (PublishName = @PublishName)";
			this.sqlInsertCommand1.Connection = this.sqlConnection1;
			this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@PublishName", System.Data.SqlDbType.VarChar, 50, "PublishName"));
			this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@PublishAddress", System.Data.SqlDbType.VarChar, 50, "PublishAddress"));
			this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@PublishPhoneNo", System.Data.SqlDbType.VarChar, 15, "PublishPhoneNo"));
			this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@PbulishEmail", System.Data.SqlDbType.VarChar, 30, "PbulishEmail"));
			// 
			// sqlSelectCommand1
			// 
			this.sqlSelectCommand1.CommandText = "SELECT PublishName, PublishAddress, PublishPhoneNo, PbulishEmail FROM PublishComp" +
				"any";
			this.sqlSelectCommand1.Connection = this.sqlConnection1;
			// 
			// sqlUpdateCommand1
			// 
			this.sqlUpdateCommand1.CommandText = @"UPDATE PublishCompany SET PublishName = @PublishName, PublishAddress = @PublishAddress, PublishPhoneNo = @PublishPhoneNo, PbulishEmail = @PbulishEmail WHERE (PublishName = @Original_PublishName) AND (PbulishEmail = @Original_PbulishEmail OR @Original_PbulishEmail IS NULL AND PbulishEmail IS NULL) AND (PublishAddress = @Original_PublishAddress OR @Original_PublishAddress IS NULL AND PublishAddress IS NULL) AND (PublishPhoneNo = @Original_PublishPhoneNo OR @Original_PublishPhoneNo IS NULL AND PublishPhoneNo IS NULL); SELECT PublishName, PublishAddress, PublishPhoneNo, PbulishEmail FROM PublishCompany WHERE (PublishName = @PublishName)";
			this.sqlUpdateCommand1.Connection = this.sqlConnection1;
			this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@PublishName", System.Data.SqlDbType.VarChar, 50, "PublishName"));
			this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@PublishAddress", System.Data.SqlDbType.VarChar, 50, "PublishAddress"));
			this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@PublishPhoneNo", System.Data.SqlDbType.VarChar, 15, "PublishPhoneNo"));
			this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@PbulishEmail", System.Data.SqlDbType.VarChar, 30, "PbulishEmail"));
			this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_PublishName", System.Data.SqlDbType.VarChar, 50, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "PublishName", System.Data.DataRowVersion.Original, null));
			this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_PbulishEmail", System.Data.SqlDbType.VarChar, 30, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "PbulishEmail", System.Data.DataRowVersion.Original, null));
			this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_PublishAddress", System.Data.SqlDbType.VarChar, 50, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "PublishAddress", System.Data.DataRowVersion.Original, null));
			this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_PublishPhoneNo", System.Data.SqlDbType.VarChar, 15, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "PublishPhoneNo", System.Data.DataRowVersion.Original, null));
			// 
			// Publishing
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(544, 318);
			this.Controls.Add(this.btnDelete);
			this.Controls.Add(this.lblDatasetPosition);
			this.Controls.Add(this.btnPrevious);
			this.Controls.Add(this.btnNext);
			this.Controls.Add(this.btnLast);
			this.Controls.Add(this.btnFirst);
			this.Controls.Add(this.groupBox1);
			this.Controls.Add(this.btnExit);
			this.Controls.Add(this.groupBox3);
			this.MaximizeBox = false;
			this.MinimizeBox = false;
			this.Name = "Publishing";
			this.Text = "出版社信息维护";
			this.Load += new System.EventHandler(this.Publishing_Load);
			this.groupBox1.ResumeLayout(false);
			((System.ComponentModel.ISupportInitialize)(this.objDataSetPublishing)).EndInit();
			this.groupBox3.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion

		public void ErrorHandle(System.Exception E)
		{
			MessageBox.Show(E.ToString());
		}		

		private void ButtonPositonChange()
		{
			this.btnPrevious.Enabled=true;
			this.btnNext.Enabled=true;
			this.btnFirst.Enabled=true;
			this.btnLast.Enabled=true;
			if(this.BindingContext[this.objDataSetPublishing,"PublishCompany"].Position==0)
			{
				this.btnFirst.Enabled=false;
				this.btnPrevious.Enabled=false;
			}
			if(this.BindingContext[this.objDataSetPublishing,"PublishCompany"].Position==this.BindingContext[this.objDataSetPublishing,"PublishCompany"].Count-1)
			{
				this.btnNext.Enabled=false;
				this.btnLast.Enabled=false;
			}
		}
		
		private void DatasetPostionChange()
		{
			this.lblDatasetPosition.Text=(this.BindingContext[this.objDataSetPublishing,"PublishCompany"].Position+1)+"的"+
				(this.BindingContext[this.objDataSetPublishing,"PublishCompany"].Count);
		}

		private void TextEnableControl(bool valid)
		{
			if(valid)
			{				
				this.textName.Enabled=true;
				this.textAdress.Enabled=true;
				
				this.textEmail.Enabled=true;				
				this.textTelNo.Enabled=true;	
				
				
			}
			else
			{
				this.textName.Enabled=false;
				this.textAdress.Enabled=false;
				
				this.textEmail.Enabled=false;				
				this.textTelNo.Enabled=false;
			}
		}

		private void ButtonEnableControl(bool valid)
		{
			if(valid)
			{
				this.btnCancel.Enabled=true;
				this.btnApply.Enabled=true;
			}
			else
			{
				this.btnCancel.Enabled=false;
				this.btnApply.Enabled=false;
			}
		}
						
		private void LoadDataSet()
		{
			DataSetPublishing objDataSetTemp=new DataSetPublishing();
			try
			{
				this.FillDataSet(objDataSetTemp);

			}
			catch (System.Exception E) 
			{
				// 在此处添加错误处理代码。
				this.ErrorHandle(E);
			}
			try
			{
				this.objDataSetPublishing.Clear();
				this.objDataSetPublishing.Merge(objDataSetTemp);
			}
			catch(System.Exception E) 
			{
				// 在此处添加错误处理代码。
				this.ErrorHandle(E);
			}
			
		}
		
		private void FillDataSet(DataSetPublishing dataset)
		{
			dataset.EnforceConstraints=false;
			try
			{
				this.sqlConnection1.Open();
				this.sqlDataAdapter1.Fill(dataset);
			}
			catch(System.Exception E)
			{
				this.ErrorHandle(E);
			}
		
			finally
			{
				dataset.EnforceConstraints=true;
				this.sqlConnection1.Close();
			}
		}

		private void Publishing_Load(object sender, System.EventArgs e)
		{
			this.LoadDataSet();
			this.DatasetPostionChange();
			this.ButtonPositonChange();
			this.TextEnableControl(false);
			this.ButtonEnableControl(false);
		
		}
		
		private void btnNext_Click(object sender, System.EventArgs e)
		{
			this.BindingContext[this.objDataSetPublishing,"PublishCompany"].Position+=1;
			this.ButtonPositonChange();
			this.DatasetPostionChange();

		}
		

		private void btnPrevious_Click(object sender, System.EventArgs e)
		{
			this.BindingContext[this.objDataSetPublishing,"PublishCompany"].Position-=1;
		this.ButtonPositonChange();
			this.DatasetPostionChange();
		
		}

		private void btnFirst_Click(object sender, System.EventArgs e)
		{
			this.BindingContext[this.objDataSetPublishing,"PublishCompany"].Position=0;
			this.ButtonPositonChange();
			this.DatasetPostionChange();
		}

		private void btnLast_Click(object sender, System.EventArgs e)
		{
			this.BindingContext[this.objDataSetPublishing,"PublishCompany"].Position=this.BindingContext[this.objDataSetPublishing,"PublishCompany"].Count-1;
			this.ButtonPositonChange();
			this.DatasetPostionChange();
		}		

		private void btnAdd_Click(object sender, System.EventArgs e)
		{
			try
			{
				this.BindingContext[this.objDataSetPublishing,"PublishCompany"].AddNew();
			}
			catch(System.Exception E)
			{
				this.ErrorHandle(E);
			}
			this.DatasetPostionChange();
			this.ButtonPositonChange();	
			this.TextEnableControl(true);
			this.ButtonEnableControl(true);
		}

		private void btnDelete_Click(object sender, System.EventArgs e)
		{
			if((this.BindingContext[this.objDataSetPublishing,"PublishCompany"].Count>0)&
				(MessageBox.Show("真的要删除此记录吗","确定删除",MessageBoxButtons.OKCancel,MessageBoxIcon.Question).Equals(DialogResult.OK)))
			{
				try
				{
					int currentPosition=this.BindingContext[this.objDataSetPublishing,"PublishCompany"].Position;
					this.objDataSetPublishing.Tables[0].Rows[currentPosition].Delete();
				}
				catch(System.Exception E)
				{
					this.ErrorHandle(E);
				}
				this.ButtonPositonChange();
				this.DatasetPostionChange();
			}
			else
				return;
		}

		
		private void btnModify_Click(object sender, System.EventArgs e)
		{
			this.TextEnableControl(true);
			this.ButtonEnableControl(true);
		
		}

		private void btnQuery_Click(object sender, System.EventArgs e)
		{

		
		}
		
		public void UpdateDataSet()
		{
			this.BindingContext[this.objDataSetPublishing,"PublishCompany"].EndCurrentEdit();
			DataSetPublishing objDataSetTemp=new DataSetPublishing();
			objDataSetTemp=(DataSetPublishing)(this.objDataSetPublishing.GetChanges());
			try
			{
				this.UpdateDataSource(objDataSetTemp);
				this.objDataSetPublishing.Merge(objDataSetTemp);
				this.objDataSetPublishing.AcceptChanges();
			}
			catch(System.Exception E)
			{
				this.ErrorHandle(E);
			}
		}
		

		public void UpdateDataSource(DataSetPublishing Changerows)
		{
			try
			{
				this.sqlConnection1.Open();
				this.sqlDataAdapter1.Update(Changerows);
			}
			catch(System.Exception E)
			{
				this.ErrorHandle(E);
			}
			finally
			{
				this.sqlConnection1.Close();

			}	
		}

		private void btnApply_Click(object sender, System.EventArgs e)
		{
			try
			{
				this.UpdateDataSet();
			}
			catch(System.Exception E)
			{
				this.ErrorHandle(E);
			}			
			this.ButtonPositonChange();
			this.DatasetPostionChange();
			this.TextEnableControl(false);
			this.ButtonEnableControl(false);
		}

		private void btnCancel_Click(object sender, System.EventArgs e)
		{
			try
			{
				this.BindingContext[this.objDataSetPublishing,"PublishCompany"].CancelCurrentEdit();
			}
			catch(System.Exception E)
			{
				this.ErrorHandle(E);
			}			
			this.DatasetPostionChange();
			this.TextEnableControl(false);
			this.TextEnableControl(false);
			this.ButtonEnableControl(false);
			
		}

		private void btnExit_Click(object sender, System.EventArgs e)
		{
			this.Close();
		}

		private void btnQuery_Click_1(object sender, System.EventArgs e)
		{
		
		}		

	}
}