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本文小編為大家詳細介紹“C#怎么實現窗體通訊錄系統功能”，內容詳細，步驟清晰，細節處理妥當，希望這篇“C#怎么實現窗體通訊錄系統功能”文章能幫助大家解決疑惑，下面跟著小編的思路慢慢深入，一起來學習新知識吧。
代碼如下：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SqlClient;
using System.Data;
namespace TongxunLu
{
public static class DBHelp
{
static string sqlcon = "Data Source=.;Initial Catalog=TXL;Integrated Security=True";
public static SqlConnection con = new System.Data.SqlClient.SqlConnection(sqlcon);
public static SqlCommand cmd = new SqlCommand();
}
}登錄頁面：
雙加登錄里面代碼：
private void btnOK_Click(object sender, EventArgs e)
{
//驗證用戶名與密碼非空
if (txtUserName.Text == "")
{
MessageBox.Show("用戶名不能為空，請輸入！");
txtUserName.Focus();
return;
}
if (txtUserPwd.Text == "")
{
MessageBox.Show("密碼不能為空，請輸入！");
txtUserPwd.Focus();
return;
}
//定義鏈接字符串和鏈接對象
string sqlcon = "Data Source=.;Initial Catalog=TXL;Integrated Security=True";
SqlConnection con = new System.Data.SqlClient.SqlConnection(sqlcon);
//操作數據庫，實現登錄功能
try
{
con.Open();
string sqlcomm = "select distinct COUNT(*) from Users where UserName='" + txtUserName.Text + "' and Password='" + txtUserPwd.Text + "'";
SqlCommand cmd = new System.Data.SqlClient.SqlCommand(sqlcomm, con);
//cmd.Connection = con;
//cmd.CommandText = sqlcomm;
if ((int)cmd.ExecuteScalar() == 1)
{
// MessageBox.Show("登錄成功");
Users.UserName = txtUserName.Text;
FrmMain fmain = new FrmMain();
fmain.Show();
}
else
{
MessageBox.Show("登錄失敗");
}
// MessageBox.Show("數據庫打開成功", "提示信息", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "提示信息", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);
}
finally
{
con.Close();
// MessageBox.Show("數據庫成功關閉", "提示信息", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);
}
}雙擊取消，里面代碼：
private void btnCacel_Click(object sender, EventArgs e)
{
Application.Exit();
}
輸入用戶表里面的信息，進行登錄：
添加菜單欄、工具欄、狀態欄
菜單欄控件：MenuStrip 以mus開頭命名
項目名稱以tsm開頭 項目里的項目以tsmi開頭命名
工具欄控件：ToolStrip 項顯示圖片和文本更改屬性DisplayStyle，工具欄：以tst開頭
狀態欄控件：StatusStrip，狀態欄：以tss命名開頭
當頁面加載那個用戶登錄，狀態用Label控件就顯示誰的名字，代碼：
private void FrmMain_Load(object sender, EventArgs e)
{
//接受登錄名
toolStripStatusLabel2.Text += Users.UserName;
toolStripStatusLabel3.Text += GetNum(Users.UserName).ToString();
LoadGroup();
}主頁面里面的詳細功能代碼，如下：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace TongxunLu
{
public partial class FrmMain : Form
{
public FrmMain()
{
InitializeComponent();
}
//顯示添加窗體
public void add()
{
frmAdd fadd = new frmAdd();
fadd.Show();
}
//顯示修改窗體
public void edit()
{
frmEdit fedit = new frmEdit();
fedit.Show();
}
//顯示查詢窗體
public void seacher()
{
frmSeach fseacher=new frmSeach ();
fseacher.Show();
}
//統計登錄聯系人的個數
public int GetNum(string str1)
{
int num = 0;
try
{
DBHelp.con.Open();
string sqlcomm = string.Format("select count(*) from BUsicInfo where UserName='{0}'",str1);
DBHelp.cmd.Connection = DBHelp.con;
DBHelp.cmd.CommandText = sqlcomm;
num = (int)DBHelp.cmd.ExecuteScalar();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
DBHelp.con.Close();
}
return num;
}
//統計登錄聯系人分組的個數
public int GetGroupsNum()
{
int num = 0;
try
{
DBHelp.con.Open();
string sqlcomm = string.Format("select count(*) from BUsicInfo where UserName='{0}' and groups='{1}'",Users.UserName,treeView1.SelectedNode.Text );
DBHelp.cmd.Connection = DBHelp.con;
DBHelp.cmd.CommandText = sqlcomm;
num = (int)DBHelp.cmd.ExecuteScalar();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
DBHelp.con.Close();
}
return num;
}
//加載treeview控件
public void LoadGroup()
{
try
{
DBHelp.con.Open();
string sqlcomm = string.Format("select groups from busicInfo where userName='{0}'",Users.UserName);
DBHelp.cmd.Connection = DBHelp.con;
DBHelp.cmd.CommandText = sqlcomm;
SqlDataReader dr = DBHelp.cmd.ExecuteReader();
while(dr.Read())
{
treeView1.Nodes.Add(dr[0].ToString());
}
dr.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
DBHelp.con.Close();
}
}
//加載ListView控件
public void loadList()
{
if (treeView1.Nodes.Count == 0)
{
MessageBox.Show("請重新加載");
listView1.Items.Clear();
return;
}
if (treeView1.SelectedNode.Index >= 0)
{
listView1.Clear();
listView1.Columns.Add("姓名", 100);
listView1.Columns.Add("工作單位", 100);
listView1.Columns.Add("聯系電話", 100);
listView1.Columns.Add("電子郵箱", 100);
listView1.Columns.Add("QQ", 100);
try
{
DBHelp.con.Open();
string sqlcomm = string.Format("select * from busicInfo where userName='{0}' and Groups='{1}'",Users.UserName,treeView1.SelectedNode.Text);
DBHelp.cmd.CommandText = sqlcomm;
DBHelp.cmd.Connection = DBHelp.con;
SqlDataReader dr = DBHelp.cmd.ExecuteReader();
while(dr.Read())
{
ListViewItem lvi = new ListViewItem();
lvi.Tag = dr[0];
lvi.Text = dr[3].ToString();
lvi.SubItems.Add(dr[4].ToString());
lvi.SubItems.Add(dr[5].ToString());
lvi.SubItems.Add(dr[6].ToString());
lvi.SubItems.Add(dr[7].ToString());
listView1.Items.Add(lvi);
}
dr.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
DBHelp.con.Close();
}
}
}
private void 增加聯系人ToolStripMenuItem_Click(object sender, EventArgs e)
{
add();
}
private void toolStripButton1_Click(object sender, EventArgs e)
{
add();
}
private void toolStripButton4_Click(object sender, EventArgs e)
{
seacher();
}
private void FrmMain_Load(object sender, EventArgs e)
{
//接受登錄名
toolStripStatusLabel2.Text += Users.UserName;
toolStripStatusLabel3.Text += GetNum(Users.UserName).ToString();
LoadGroup();
}
private void menuStrip1_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
}
private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
{
loadList();
toolStripStatusLabel3.Text = GetGroupsNum().ToString();
}
}
}
Tablcontrol控件：分頁選項:用來分頁：基本信息和其他信息
雙擊確定，里面代碼：
private void btnAdd_Click(object sender, EventArgs e)
{
try
{
DBHelp.con.Open();
DBHelp.cmd.CommandText =string.Format("insert into BusicInfo(userName,Groups,Name,workUnit,Phone,Email,QQ)values('{0}','{1}','{2}','{3}','{4}','{5}','{6}')",Users.UserName,cmbGroup.SelectedValue,txtName.Text,txtWorkUnit.Text,txtPhone.Text,txtEmail.Text,txtQQ.Text);
DBHelp.cmd.Connection = DBHelp.con;
if ((int)DBHelp.cmd.ExecuteNonQuery() == 1)
{
MessageBox.Show("添加成功");
}
else
{
MessageBox.Show("失敗");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
DBHelp.con.Close();
}
}加載頁面，雙擊壓面，里面代碼
public void LoadGroup()
{
try
{
DBHelp.con.Open();
string sqlcomm = string.Format("select groups from busicInfo where userName='{0}'", Users.UserName);
DBHelp.cmd.Connection = DBHelp.con;
DBHelp.cmd.CommandText = sqlcomm;
SqlDataReader dr = DBHelp.cmd.ExecuteReader();
while (dr.Read())
{
cmbGroup.Items.Add(dr[0].ToString());
}
dr.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
DBHelp.con.Close();
}
}
private void frmAdd_Load(object sender, EventArgs e)
{
LoadGroup();
}
雙擊查詢按鈕，里面代碼：
private void btnSeach_Click(object sender, EventArgs e)
{
string sqlcomm = "";
if(txtUserName.Text==""&&txtUserPhone.Text=="")
{
sqlcomm = string.Format("select * from BusicInfo ");
}
else if (txtUserName.Text == "")
{
sqlcomm = string.Format("select * from BusicInfo where Phone='%{0}%' ", txtUserPhone.Text);
}
else if (txtUserPhone.Text == "")
{
sqlcomm = string.Format("select * from BusicInfo where UserName='{0}%' ", txtUserName.Text);
}
else
{
sqlcomm = string.Format("select * from BusicInfo where UserName='{0}%' and Phone='{1}%' ", txtUserName.Text, txtUserPhone.Text);
}
try
{
DBHelp.con.Open();
SqlDataAdapter da = new SqlDataAdapter(sqlcomm,DBHelp.con);
DataSet ds = new DataSet();
da.Fill(ds);
dataGridView1.DataSource = ds.Tables[0];
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
DBHelp.con.Close();
}
}讀到這里，這篇“C#怎么實現窗體通訊錄系統功能”文章已經介紹完畢，想要掌握這篇文章的知識點還需要大家自己動手實踐使用過才能領會，如果想了解更多相關內容的文章，歡迎關注億速云行業資訊頻道。
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