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本文小編為大家詳細(xì)介紹“C#怎么實(shí)現(xiàn)窗體通訊錄系統(tǒng)功能”，內(nèi)容詳細(xì)，步驟清晰，細(xì)節(jié)處理妥當(dāng)，希望這篇“C#怎么實(shí)現(xiàn)窗體通訊錄系統(tǒng)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(lái)學(xué)習(xí)新知識(shí)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(yè)面：
雙加登錄里面代碼：
private void btnOK_Click(object sender, EventArgs e)
{
//驗(yàn)證用戶名與密碼非空
if (txtUserName.Text == "")
{
MessageBox.Show("用戶名不能為空，請(qǐng)輸入！");
txtUserName.Focus();
return;
}
if (txtUserPwd.Text == "")
{
MessageBox.Show("密碼不能為空，請(qǐng)輸入！");
txtUserPwd.Focus();
return;
}
//定義鏈接字符串和鏈接對(duì)象
string sqlcon = "Data Source=.;Initial Catalog=TXL;Integrated Security=True";
SqlConnection con = new System.Data.SqlClient.SqlConnection(sqlcon);
//操作數(shù)據(jù)庫(kù)，實(shí)現(xiàn)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(shù)據(jù)庫(kù)打開(kāi)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(shù)據(jù)庫(kù)成功關(guān)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(jìn)行登錄：
添加菜單欄、工具欄、狀態(tài)欄
菜單欄控件：MenuStrip 以mus開(kāi)頭命名
項(xiàng)目名稱以tsm開(kāi)頭 項(xiàng)目里的項(xiàng)目以tsmi開(kāi)頭命名
工具欄控件：ToolStrip 項(xiàng)顯示圖片和文本更改屬性DisplayStyle，工具欄：以tst開(kāi)頭
狀態(tài)欄控件：StatusStrip，狀態(tài)欄：以tss命名開(kāi)頭
當(dāng)頁(yè)面加載那個(gè)用戶登錄，狀態(tài)用Label控件就顯示誰(shuí)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(yè)面里面的詳細(xì)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(tǒng)計(jì)登錄聯(lián)系人的個(gè)數(shù)
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(tǒng)計(jì)登錄聯(lián)系人分組的個(gè)數(shù)
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(qǐng)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(lián)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(lián)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(yè)選項(xiàng):用來(lái)分頁(yè)：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(yè)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(shí)現(xiàn)窗體通訊錄系統(tǒng)功能”文章已經(jīng)介紹完畢，想要掌握這篇文章的知識(shí)點(diǎn)還需要大家自己動(dòng)手實(shí)踐使用過(guò)才能領(lǐng)會(huì)，如果想了解更多相關(guān)內(nèi)容的文章，歡迎關(guān)注億速云行業(yè)資訊頻道。
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