本文介绍了使用通用集合的EmployeeMaster的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我已经使用Datatable，数据集和datagrids制作了EmployeeMaster应用程序，但是现在我想使用Generic Collections进行创建，所以有人可以帮助我吗?
我想为自己的代码完整地转换代码....
以下是EmployeeMaster的我的代码...
Form1.cs
I had made an EmployeeMaster Application by using Datatable, datasets and datagrids but now i want to make the same using Generic Collections, so can anybody help me?
I want to have complete converted code for my code....
Following is mine code for EmployeeMaster...
Form1.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.Configuration;
namespace EmployeeMaster
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
DataTable dt1;
string EmpID = "";
SqlDataAdapter da = new SqlDataAdapter();
SqlConnection con = new SqlConnection();
string DepartmentID = "";
private void btnNewRecord_Click(object sender, EventArgs e)
{
comboBox1.SelectedIndex = 0;
comboBox2.SelectedIndex = 0;
textBox1.Clear();
textBox1.Visible = false;
label2.Visible = false;
textBox2.Clear();
textBox3.Clear();
textBox4.Clear();
textBox6.Clear();
textBox7.Clear();
textBox8.Clear();
textBox2.ReadOnly = false;
textBox2.Enabled = true;
date1.Enabled = true;
textBox6.ReadOnly = false;
textBox7.ReadOnly = false;
textBox8.ReadOnly = false;
textBox6.Enabled = true;
textBox7.Enabled = true;
textBox8.Enabled = true;
errorProvider1.Dispose();
btnUpdate.Enabled = true;
date1.Format = DateTimePickerFormat.Custom;
date1.Value = DateTime.Now;
textBox2.Focus();
if (btnUpdate.Text == "Update")
{
btnUpdate.Text = "Save";
}
}
private void run()
{
dt1 = new DataTable();
EmpMaster get = new EmpMaster();
dt1= get.Get();
dataGridView1.DataSource = dt1;
}
private void Form1_Load(object sender, EventArgs e)
{
textBox1.Visible = false;
label2.Visible = false;
run();
EmpMaster getemptype = new EmpMaster();
dt1 = getemptype.GetEmpType();
comboBox1.DisplayMember = "EmploymentType";
comboBox1.ValueMember = "EmpType_ID";
comboBox1.DataSource = dt1;
EmpMaster getdept = new EmpMaster();
dt1 = getdept.GetDept();
comboBox2.DisplayMember = "departmentname";
comboBox2.ValueMember = "departmentid";
comboBox2.DataSource = dt1;
btnUpdate.Enabled = false;
comboBox1.SelectedIndex = 0;
comboBox2.SelectedIndex = 0;
textBox3.Clear();
textBox4.Clear();
textBox2.Focus();
}
private void dataGridView1_RowHeaderMouseDoubleClick(object sender, DataGridViewCellMouseEventArgs e)
{
textBox1.Visible = true;
label2.Visible = true;
textBox2.Enabled = true;
btnUpdate.Enabled = true;
int xyz = e.RowIndex;
DataRowView dr = (DataRowView)dataGridView1.Rows[xyz].DataBoundItem;
EmpID = dr["EmpID"].ToString();
DepartmentID = dr["DepartmentID"].ToString();
textBox1.Text = dr["EmpID"].ToString();
textBox2.Text = dr["EmpName"].ToString();
comboBox1.SelectedValue = dr["EmpType_ID"].ToString();
comboBox2.SelectedValue = dr["DepartmentID"].ToString();
date1.Format = DateTimePickerFormat.Short;
date1.Value = Convert.ToDateTime( dr["DateofJoining"]);
textBox6.Text = dr["GrossSalary"].ToString();
textBox7.Text = dr["NetSalary"].ToString();
textBox8.Text = dr["Phone"].ToString();
btnUpdate.Text = "Update";
textBox2.ReadOnly = false;
date1.Enabled = true;
textBox6.Enabled = true;
textBox7.Enabled = true;
textBox8.Enabled = true;
textBox6.ReadOnly = false;
textBox7.ReadOnly = false;
textBox8.ReadOnly = false;
}
private void btnUpdate_Click(object sender, EventArgs e)
{
textBox2.Enabled = true;
textBox6.Enabled = true;
textBox7.Enabled = true;
textBox8.Enabled = true;
if (textBox2.Text == "")
{
errorProvider1.SetError(textBox2, "You need to enter a valid Name");
MessageBox.Show("Please fill in the empty fields. All fields are mandatory.", "Employee Master", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
errorProvider1.Dispose();
}
if (date1.Value == Convert.ToDateTime("1/1/1753") || date1.Value > Convert.ToDateTime(DateTime.Now))
{
errorProvider1.SetError(date1, "Please enter valid date");
MessageBox.Show("Please enter valid date.", "Employee Master", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
errorProvider1.Dispose();
}
if (textBox6.Text == "")
{
errorProvider1.SetError(textBox6, "You need to enter a value (Your Gross Salary)");
MessageBox.Show("Please fill in the empty fields. All fields are mandatory.", "Employee Master", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
errorProvider1.Dispose();
}
if (textBox7.Text == "")
{
errorProvider1.SetError(textBox7, "You need to enter a value (Your Net Salary)");
MessageBox.Show("Please fill in the empty fields. All fields are mandatory.", "Employee Master", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
errorProvider1.Dispose();
}
if (comboBox1.SelectedIndex == 0)
{
errorProvider1.SetError(comboBox1, "Please enter valid Employment Type");
MessageBox.Show("Please mention your EmploymentType - Permanent, Probation, Contractual or Trainee", "Employee Master", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
errorProvider1.Dispose();
}
if (comboBox2.SelectedIndex == 0)
{
errorProvider1.SetError(comboBox2, "Please enter valid Department Type");
MessageBox.Show("Please mention your EmploymentType - Permanent, Probation, Contractual or Trainee", "Employee Master", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
errorProvider1.Dispose();
}
if (date1.Value < DateTime.Now)
{
errorProvider1.SetError(date1, "Please enter valid Date");
MessageBox.Show("Please mention your DOJ", "Employee Master", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
EmpMaster updatedb = new EmpMaster();
updatedb.EmpID = EmpID;
updatedb.EmpName = textBox2.Text;
updatedb.EmpType_ID = comboBox1.SelectedValue.ToString();
updatedb.DepartmentID = comboBox2.SelectedValue.ToString();
updatedb.DateofJoining = date1.Value;
updatedb.GrossSalary = textBox6.Text;
updatedb.NetSalary = textBox7.Text;
updatedb.Phone = textBox8.Text;
if (btnUpdate.Text == "Update")
{
if (updatedb.UpdateDB() < 0)
{
MessageBox.Show(updatedb.errortext);
return;
}
run();
foreach (DataGridViewRow dr in dataGridView1.Rows)
{
if (dr.Cells["EmpID"].Value.ToString() == EmpID)
{
dr.Selected = true;
}
}
dataGridView1.CurrentRow.Selected = false;
dataGridView1.CurrentCell.Selected = false;
MessageBox.Show("Record Updated");
}
else if (btnUpdate.Text == "Save")
{
if (updatedb.SaveDB() < 0)
{
MessageBox.Show(updatedb.errortext);
return;
}
run();
foreach (DataGridViewRow dr in dataGridView1.Rows)
{
if (dr.Cells["EmpID"].Value.ToString() == EmpID)
{
dr.Selected = true;
}
}
dataGridView1.CurrentRow.Selected = false;
dataGridView1.CurrentCell.Selected = false;
MessageBox.Show("Record Saved");
}
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
if (comboBox1.SelectedIndex == 0)
{
textBox3.Clear();
textBox4.Clear();
}
else
{
textBox3.Text = comboBox1.SelectedValue.ToString();
}
}
private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
{
if (comboBox1.SelectedIndex == 0)
{
textBox3.Clear();
textBox4.Clear();
}
else
{
textBox4.Text = comboBox2.SelectedValue.ToString();
}
}
private void date1_DropDown(object sender, EventArgs e)
{
date1.Format = DateTimePickerFormat.Short;
date1.Value = DateTime.Now;
}
private void textBox8_KeyPress(object sender, KeyPressEventArgs e)
{
if (!((e.KeyChar > 47 && e.KeyChar <= 57) || (e.KeyChar == 8) || (e.KeyChar == 13) || (e.KeyChar == 9) || (e.KeyChar == 0) || (e.KeyChar == 127)))
{
errorProvider1.SetError(textBox8, "Please use 0-9 keys only. (Numpad)");
MessageBox.Show("Please enter 0-9. Phone numbers don't have alphabets.", "Employee Master", MessageBoxButtons.OK, MessageBoxIcon.Information);
e.Handled = true;
}
}
private void textBox6_KeyPress(object sender, KeyPressEventArgs e)
{
if (!((e.KeyChar > 47 && e.KeyChar <= 57) || (e.KeyChar == 8) || (e.KeyChar == 13) || (e.KeyChar == 9) || (e.KeyChar == 0) || (e.KeyChar == 127)))
{
errorProvider1.SetError(textBox6, "Please use 0-9 keys only. (Numpad)");
MessageBox.Show("Please enter 0-9. Salary don't have alphabets.", "Employee Master", MessageBoxButtons.OK, MessageBoxIcon.Information);
e.Handled = true;
}
}
private void textBox7_KeyPress(object sender, KeyPressEventArgs e)
{
if (!((e.KeyChar > 47 && e.KeyChar <= 57) || (e.KeyChar == 8) || (e.KeyChar == 13) || (e.KeyChar == 9) || (e.KeyChar == 0) || (e.KeyChar == 127)))
{
errorProvider1.SetError(textBox7, "Please use 0-9 keys only. (Numpad)");
MessageBox.Show("Please enter 0-9. Salary don't have alphabets.", "Employee Master", MessageBoxButtons.OK, MessageBoxIcon.Information);
e.Handled = true;
}
}
}
}
EmpMaster.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
namespace EmployeeMaster
{
public class EmpMaster
{
DataSet ds;
DataSet dsdept;
DataSet dsemptype;
SqlDataAdapter da;
SqlCommand sc1;
public string EmpID
{
get;
set;
}
public string EmpName
{
get;
set;
}
public string EmpType_ID
{
get;
set;
}
public string DepartmentID
{
get;
set;
}
public string GrossSalary
{
get;
set;
}
public string NetSalary
{
get;
set;
}
public string Phone
{
get;
set;
}
public DateTime DateofJoining
{
get;
set;
}
public string errortext
{
get;
set;
}
public DataTable Get()
{
ds = new DataSet();
SqlDataAdapter da = new SqlDataAdapter();
SqlConnection con = new SqlConnection();
SqlCommand sc1 = new SqlCommand();
sc1.CommandText = "Select EmployeeMaster.*, d.DepartmentName, z.EmploymentType from EmployeeMaster inner join dbo.Department d on d.DepartmentID = EmployeeMaster.DepartmentID inner join dbo.EmpType z on z.EmpType_ID = EmployeeMaster.EmpType_ID";
da.SelectCommand = sc1;
sc1.Connection = con;
con.ConnectionString = ConfigurationSettings.AppSettings["con"];
con.Open();
da.Fill(ds);
con.Close();
return ds.Tables[0];
}
public DataTable GetEmpType()
{
SqlConnection con = new SqlConnection();
sc1 = new SqlCommand();
da = new SqlDataAdapter();
sc1.CommandText = "Select * from EmpType order by EmploymentType";
da.SelectCommand = sc1;
sc1.Connection = con;
con.ConnectionString = ConfigurationSettings.AppSettings["con"];
con.Open();
dsdept = new DataSet();
da.Fill(dsdept);
con.Close();
return dsdept.Tables[0];
}
public DataTable GetDept()
{
SqlConnection con = new SqlConnection();
sc1 = new SqlCommand();
da = new SqlDataAdapter();
sc1.CommandText = "Select * from Department order by DepartmentName";
da.SelectCommand = sc1;
sc1.Connection = con;
con.ConnectionString = ConfigurationSettings.AppSettings["con"];
con.Open();
dsemptype = new DataSet();
da.Fill(dsemptype);
con.Close();
return dsemptype.Tables[0];
}
public int UpdateDB()
{
int abc=0;
SqlConnection con = new SqlConnection();
try
{
SqlCommand sc1 = new SqlCommand();
sc1.CommandText = "Update Employeemaster set phone ='" + Phone + "', empname ='" + EmpName + "', dateofjoining = '" + DateofJoining.ToShortDateString() + "', grosssalary = '" + GrossSalary + "', netsalary = '" + NetSalary + "', EmpType_ID = '" + EmpType_ID + "', DepartmentID = '" + DepartmentID + "' where EmpID = '" + EmpID + "'";
SqlDataAdapter da = new SqlDataAdapter();
da.SelectCommand = sc1;
sc1.Connection = con;
con.ConnectionString = ConfigurationSettings.AppSettings["con"];
con.Open();
abc = sc1.ExecuteNonQuery();
if (abc < 0)
{
return -1;
}
}
catch (Exception ex)
{
errortext = ex.Message;
return -1;
}
finally
{
con.Close();
}
return abc;
}
public int SaveDB()
{
int def = 0;
SqlConnection con = new SqlConnection();
try
{
SqlCommand sc1 = new SqlCommand();
sc1.CommandText = "Insert into Employeemaster (empname, EmpType_ID, DepartmentID, grosssalary, netsalary, phone, dateofjoining) values ('" + EmpName + "', '" + EmpType_ID + "', '" + DepartmentID + "', '" + GrossSalary + "', '" + NetSalary + "', '" + Phone + "', '" + Convert.ToDateTime(DateofJoining).ToShortDateString() + "')";
SqlDataAdapter da = new SqlDataAdapter();
da.SelectCommand = sc1;
sc1.Connection = con;
con.ConnectionString = ConfigurationSettings.AppSettings["con"];
con.Open();
def = sc1.ExecuteNonQuery();
if (def < 0)
{
return -1;
}
}
catch (Exception ex)
{
errortext = ex.Message;
return -1;
}
finally
{
con.Close();
}
return def;
}
}
}推荐答案
foreach row in datatable
1. create a new employee object
foreach column in row
1. Using reflection set the property name with the column value
2. add the created employee to generic collection
这篇关于使用通用集合的EmployeeMaster的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！