{
for (int t = 30t <+120t = t + 15)
{
Label lb = GetLabel(t)
if (lb != null)
{
lb.Text = "你好"
lb.ForeColor = Color.Red
}
}
}
private Label GetLabel(int t)
{
int index = (t - 30) / 15 + 1
foreach (Control c in this.Controls)
{
if (c.Name == ("label" + index))
{
return (Label)c
}
}
return null
}
在工具箱输入【navigationPane】，然后拖拽到界面②navigationPane面板的简要说明
③修改标签名称和设置显示标签图标
点击【Pages】打开面板进行如下 *** 作：
2.1.2、代码添加标签和窗体内容
①新建一个需添加到标签的窗体，如下所示：
②编写代码添加标签和标签对应的窗体
//初始化
private void InitNavigationPane()
{
//指定默认选中第一个标签
navigationPane1.SelectedPage = navigationPage1
//添加一个新标签
NavigationPage NewNavigationPage = new NavigationPage()
NewNavigationPage.Name = "newNavigationPage"
NewNavigationPage.Caption = "添加的标签"
navigationPane1.Pages.Add(NewNavigationPage)
//给该新标签添加界面
NewTagForm newTagForm = new NewTagForm()
//一定要设置（否则会报错：无法将顶级控件添加控件）
newTagForm.TopLevel = false
NewNavigationPage.Controls.Add(newTagForm)
newTagForm.Show()
}
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③实现效果
2.2、NavBarControl实现步骤
2.2.1、界面布局
①在工具箱输入navBarControl，然后拖拽到界面
②NavBarControl面板的简要说明
③添加导航栏的标签组、及其组包含的标签
点击设计器【Run Designer】进行如下 *** 作：
2.2.2、代码添加标签组、标签组包含的标签和标签事件
①代码实现给标签添加事件（且点击的标签名称是【01】时创建一个新的组、及其给新组添加一个标签）
//初始化
private void InitNavBarControl()
{
navBarItem1.LinkClicked += Item_Click
navBarItem2.LinkClicked += Item_Click
navBarItem3.LinkClicked += Item_Click
navBarItem4.LinkClicked += Item_Click
navBarItem5.LinkClicked += Item_Click
navBarItem6.LinkClicked += Item_Click
navBarItem7.LinkClicked += Item_Click
navBarItem8.LinkClicked += Item_Click
navBarItem9.LinkClicked += Item_Click
navBarItem10.LinkClicked += Item_Click
}
/// <summary>
/// 导航栏子项目的点击事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Item_Click(object sender, DevExpress.XtraNavBar.NavBarLinkEventArgs e)
{
MessageBox.Show("当前点击的标签是："+e.Link.Caption)
if (e.Link.Caption=="01")
{
ActiveChangeNavigate()
}
}
//动态更改导航栏
private void ActiveChangeNavigate()
{
//新建一个组
NavBarGroup navBarGroup = new NavBarGroup()
navBarGroup.Name = "NewBarGruop"
navBarGroup.Caption = "动态添加的分组"
navBarGroup.ImageOptions.SmallImageIndex = -1
navBarGroup.ImageOptions.LargeImageIndex = -1
//将该组添加到导航中
navBarControl1.Groups.Add(navBarGroup)
//新建一个标签
NavBarItem navBarItem = new NavBarItem()
navBarItem.Name = "NewBarItem"
navBarItem.Caption = "动态添加的标签"
navBarItem.ImageOptions.SmallImageIndex = -1
navBarItem.ImageOptions.LargeImageIndex = -1
navBarItem.LinkClicked += Item_Click
//添加标签到组中
navBarControl1.Items.Add(navBarItem)
//添加标签到一个分组中
navBarGroup.ItemLinks.AddRange(new NavBarItemLink[] {
new NavBarItemLink(navBarItem)
})
}
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②实现效果
三、参考资料
Navigation Pane | WinForms Controls | DevExpress Documentation
https://docs.devexpress.com/WindowsForms/114555/Controls-and-Libraries/Navigation-Controls/Navigation-Pane
Navigation Pane | WinForms Controls | DevExpress Documentation
https://docs.devexpress.com/WindowsForms/115232/controls-and-libraries/pdf-viewer/navigation/navigation-pane?v=18.1&f=BaseControlPainter Navigation Bar | WinForms Controls | DevExpress Documentation
https://docs.devexpress.com/WindowsForms/4870/controls-and-libraries/navigation-controls/navigation-bar
NavBarControl.LinkClicked Event | WinForms Controls | DevExpress Documentation
https://docs.devexpress.com/WindowsForms/DevExpress.XtraNavBar.NavBarControl.LinkClicked
导航栏
NavigationPane
NavBarControl
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花了几分钟写的，没有进行代码优化，不过你说的功能都实现了。`请先在数据库中添加一个名字为test的数据库，一个test的表
表中的字段为：id,name,address
数据库的用户名为sa,密码为sa
Form1.cs的代码：
using System
using System.Collections.Generic
using System.ComponentModel
using System.Data
using System.Drawing
using System.Text
using System.Windows.Forms
using System.Data.SqlClient
namespace WindowsApplication4
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent()
}
private void 数据增删改查_Load(object sender, EventArgs e)
{
//this.dataGridView1.SelectionMode = DataGridViewSelectionMode.FullColumnSelect
//this.textBox1.Text = "Provider=SQLOLEDB.1Password=saPersist Security Info=TrueUser ID=saInitial Catalog=testData Source=."
this.textBox1.Text = "Server=.pwd=sauid=sadatabase=test"
}
private void button5_Click(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection(this.textBox1.Text)
con.Open()
SqlDataAdapter sqlda = new SqlDataAdapter("select * from test", con)
DataTable dt = new DataTable()
sqlda.Fill(dt)
this.dataGridView1.DataSource = dt
}
private void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)
{
//if (MessageBox.Show("你是否要更新数据？", "x", MessageBoxButtons.OKCancel) == DialogResult.OK)
//{
//MessageBox.Show("OK")
//SqlConnection con = new SqlConnection(this.textBox1.Text)
//con.Open()
//SqlCommand com = new SqlCommand("update test set address = , con)
//com.ExecuteNonQuery()
// //SqlDataReader dr = com.ExecuteReader()
//}
//else
//{
//MessageBox.Show("NO")
//}
}
private void dataGridView1_SelectionChanged(object sender, EventArgs e)
{
//MessageBox.Show("xxx")
}
private void dataGridView1_UserAddedRow(object sender, DataGridViewRowEventArgs e)
{
//MessageBox.Show("xxx")
}
private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
{
if (this.dataGridView1.SelectedRows.Count != 0)
{
this.textBox7.Text = this.dataGridView1.SelectedRows[0].Cells["id"].Value.ToString()
this.textBox8.Text = this.dataGridView1.SelectedRows[0].Cells["name"].Value.ToString()
this.textBox9.Text = this.dataGridView1.SelectedRows[0].Cells["address"].Value.ToString()
}
}
private void button3_Click(object sender, EventArgs e)
{
if (MessageBox.Show("你是否要更新数据？", "x", MessageBoxButtons.OKCancel) == DialogResult.OK)
{
SqlConnection con = new SqlConnection(this.textBox1.Text)
con.Open()
SqlCommand com = new SqlCommand("update test set name= '" + this.textBox8.Text + "' ,address= '" + this.textBox9.Text+"' where id="+this.textBox7.Text,con)
com.ExecuteNonQuery()
MessageBox.Show("更新成功！")
button5_Click(null, null)
}
}
private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
}
private void button2_Click(object sender, EventArgs e)
{
if (MessageBox.Show("你是否要删除数据？", "x", MessageBoxButtons.OKCancel) == DialogResult.OK)
{
SqlConnection con = new SqlConnection(this.textBox1.Text)
con.Open()
SqlCommand com = new SqlCommand("delete from test where id='"+textBox7.Text+"'",con)
com.ExecuteNonQuery()
MessageBox.Show("删除成功！")
button5_Click(null, null)
}
}
private void button1_Click(object sender, EventArgs e)
{
if (this.textBox3.Text != null &&this.textBox4.Text != null &&this.textBox5.Text != null)
{
SqlConnection con = new SqlConnection(this.textBox1.Text)
con.Open()
SqlCommand com = new SqlCommand("insert test (id,name,address) values('"+this.textBox3.Text+"','"+this.textBox4.Text+"','"+this.textBox5.Text+"')",con)
com.ExecuteNonQuery()
MessageBox.Show("添加成功！")
button5_Click(null, null)
}
else
{
MessageBox.Show("请完整填写信息！")
}
}
private void button4_Click(object sender, EventArgs e)
{
if (this.radioButton1.Checked || this.radioButton2.Checked)
{
if (this.textBox2.Text != null)
{
if (this.radioButton1.Checked)
{
SqlConnection con = new SqlConnection(this.textBox1.Text)
con.Open()
SqlDataAdapter sqlda = new SqlDataAdapter("select * from test where id='"+this.textBox2.Text+"'", con)
DataTable dt = new DataTable()
sqlda.Fill(dt)
this.dataGridView1.DataSource = dt
}
else
{
SqlConnection con = new SqlConnection(this.textBox1.Text)
con.Open()
SqlDataAdapter sqlda = new SqlDataAdapter("select * from test where name='" + this.textBox2.Text + "'", con)
DataTable dt = new DataTable()
sqlda.Fill(dt)
this.dataGridView1.DataSource = dt
}
}
else
{
MessageBox.Show("请输入查询内容！")
this.textBox2.Focus()
}
}
else
{
MessageBox.Show("请选择查询方式！")
this.radioButton1.Checked = true
}
}
}
}
Form1.Designer.cs的代码：
namespace WindowsApplication4
{
partial class Form1
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing &&(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.button1 = new System.Windows.Forms.Button()
this.button2 = new System.Windows.Forms.Button()
this.button4 = new System.Windows.Forms.Button()
this.textBox1 = new System.Windows.Forms.TextBox()
this.label1 = new System.Windows.Forms.Label()
this.button5 = new System.Windows.Forms.Button()
this.textBox2 = new System.Windows.Forms.TextBox()
this.radioButton1 = new System.Windows.Forms.RadioButton()
this.radioButton2 = new System.Windows.Forms.RadioButton()
this.textBox3 = new System.Windows.Forms.TextBox()
this.textBox4 = new System.Windows.Forms.TextBox()
this.textBox5 = new System.Windows.Forms.TextBox()
this.dataGridView1 = new System.Windows.Forms.DataGridView()
this.id = new System.Windows.Forms.DataGridViewTextBoxColumn()
this.name = new System.Windows.Forms.DataGridViewTextBoxColumn()
this.address = new System.Windows.Forms.DataGridViewTextBoxColumn()
this.textBox7 = new System.Windows.Forms.TextBox()
this.textBox8 = new System.Windows.Forms.TextBox()
this.textBox9 = new System.Windows.Forms.TextBox()
this.button3 = new System.Windows.Forms.Button()
((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).BeginInit()
this.SuspendLayout()
//
// button1
//
this.button1.Location = new System.Drawing.Point(460, 301)
this.button1.Name = "button1"
this.button1.Size = new System.Drawing.Size(75, 23)
this.button1.TabIndex = 0
this.button1.Text = "添加"
this.button1.UseVisualStyleBackColor = true
this.button1.Click += new System.EventHandler(this.button1_Click)
//
// button2
//
this.button2.Location = new System.Drawing.Point(460, 359)
this.button2.Name = "button2"
this.button2.Size = new System.Drawing.Size(75, 23)
this.button2.TabIndex = 1
this.button2.Text = "删除"
this.button2.UseVisualStyleBackColor = true
this.button2.Click += new System.EventHandler(this.button2_Click)
//
// button4
//
this.button4.Location = new System.Drawing.Point(460, 272)
this.button4.Name = "button4"
this.button4.Size = new System.Drawing.Size(75, 23)
this.button4.TabIndex = 3
this.button4.Text = "查找"
this.button4.UseVisualStyleBackColor = true
this.button4.Click += new System.EventHandler(this.button4_Click)
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(83, 12)
this.textBox1.Name = "textBox1"
this.textBox1.Size = new System.Drawing.Size(371, 21)
this.textBox1.TabIndex = 4
//
// label1
//
this.label1.AutoSize = true
this.label1.Location = new System.Drawing.Point(12, 15)
this.label1.Name = "label1"
this.label1.Size = new System.Drawing.Size(65, 12)
this.label1.TabIndex = 5
this.label1.Text = "连接字符串"
//
// button5
//
this.button5.Location = new System.Drawing.Point(460, 12)
this.button5.Name = "button5"
this.button5.Size = new System.Drawing.Size(75, 23)
this.button5.TabIndex = 6
this.button5.Text = "连接数据库"
this.button5.UseVisualStyleBackColor = true
this.button5.Click += new System.EventHandler(this.button5_Click)
//
// textBox2
//
this.textBox2.Location = new System.Drawing.Point(14, 272)
this.textBox2.Name = "textBox2"
this.textBox2.Size = new System.Drawing.Size(184, 21)
this.textBox2.TabIndex = 8
//
// radioButton1
//
this.radioButton1.AutoSize = true
this.radioButton1.Location = new System.Drawing.Point(234, 276)
this.radioButton1.Name = "radioButton1"
this.radioButton1.Size = new System.Drawing.Size(71, 16)
this.radioButton1.TabIndex = 9
this.radioButton1.TabStop = true
this.radioButton1.Text = "按ID查找"
this.radioButton1.UseVisualStyleBackColor = true
//
// radioButton2
//
this.radioButton2.AutoSize = true
this.radioButton2.Location = new System.Drawing.Point(336, 278)
this.radioButton2.Name = "radioButton2"
this.radioButton2.Size = new System.Drawing.Size(83, 16)
this.radioButton2.TabIndex = 10
this.radioButton2.TabStop = true
this.radioButton2.Text = "按Name查找"
this.radioButton2.UseVisualStyleBackColor = true
//
// textBox3
//
this.textBox3.Location = new System.Drawing.Point(14, 302)
this.textBox3.Name = "textBox3"
this.textBox3.Size = new System.Drawing.Size(98, 21)
this.textBox3.TabIndex = 11
//
// textBox4
//
this.textBox4.Location = new System.Drawing.Point(166, 303)
this.textBox4.Name = "textBox4"
this.textBox4.Size = new System.Drawing.Size(100, 21)
this.textBox4.TabIndex = 12
//
// textBox5
//
this.textBox5.Location = new System.Drawing.Point(331, 303)
this.textBox5.Name = "textBox5"
this.textBox5.Size = new System.Drawing.Size(100, 21)
this.textBox5.TabIndex = 13
//
// dataGridView1
//
this.dataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize
this.dataGridView1.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] {
this.id,
this.name,
this.address})
this.dataGridView1.Location = new System.Drawing.Point(14, 39)
this.dataGridView1.Name = "dataGridView1"
this.dataGridView1.RowTemplate.Height = 23
this.dataGridView1.Size = new System.Drawing.Size(440, 227)
this.dataGridView1.TabIndex = 18
this.dataGridView1.UserAddedRow += new System.Windows.Forms.DataGridViewRowEventHandler(this.dataGridView1_UserAddedRow)
this.dataGridView1.CellClick += new System.Windows.Forms.DataGridViewCellEventHandler(this.dataGridView1_CellClick)
this.dataGridView1.CellEndEdit += new System.Windows.Forms.DataGridViewCellEventHandler(this.dataGridView1_CellEndEdit)
this.dataGridView1.SelectionChanged += new System.EventHandler(this.dataGridView1_SelectionChanged)
this.dataGridView1.CellContentClick += new System.Windows.Forms.DataGridViewCellEventHandler(this.dataGridView1_CellContentClick)
//
// id
//
this.id.DataPropertyName = "id"
this.id.HeaderText = "id"
this.id.Name = "id"
this.id.ReadOnly = true
//
// name
//
this.name.DataPropertyName = "name"
this.name.HeaderText = "name"
this.name.Name = "name"
this.name.ReadOnly = true
//
// address
//
this.address.DataPropertyName = "address"
this.address.HeaderText = "address"
this.address.Name = "address"
//
// textBox7
//
this.textBox7.Location = new System.Drawing.Point(12, 342)
this.textBox7.Name = "textBox7"
this.textBox7.Size = new System.Drawing.Size(100, 21)
this.textBox7.TabIndex = 15
//
// textBox8
//
this.textBox8.Location = new System.Drawing.Point(166, 342)
this.textBox8.Name = "textBox8"
this.textBox8.Size = new System.Drawing.Size(100, 21)
this.textBox8.TabIndex = 16
//
// textBox9
//
this.textBox9.Location = new System.Drawing.Point(331, 342)
this.textBox9.Name = "textBox9"
this.textBox9.Size = new System.Drawing.Size(100, 21)
this.textBox9.TabIndex = 17
//
// button3
//
this.button3.Location = new System.Drawing.Point(460, 330)
this.button3.Name = "button3"
this.button3.Size = new System.Drawing.Size(75, 23)
this.button3.TabIndex = 2
this.button3.Text = "修改"
this.button3.UseVisualStyleBackColor = true
this.button3.Click += new System.EventHandler(this.button3_Click)
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F)
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
this.ClientSize = new System.Drawing.Size(553, 387)
this.Controls.Add(this.dataGridView1)
this.Controls.Add(this.textBox9)
this.Controls.Add(this.textBox8)
this.Controls.Add(this.textBox7)
this.Controls.Add(this.textBox5)
this.Controls.Add(this.textBox4)
this.Controls.Add(this.textBox3)
this.Controls.Add(this.radioButton2)
this.Controls.Add(this.radioButton1)
this.Controls.Add(this.textBox2)
this.Controls.Add(this.button5)
this.Controls.Add(this.label1)
this.Controls.Add(this.textBox1)
this.Controls.Add(this.button4)
this.Controls.Add(this.button3)
this.Controls.Add(this.button2)
this.Controls.Add(this.button1)
this.Name = "Form1"
this.Text = "数据增删改查"
this.Load += new System.EventHandler(this.数据增删改查_Load)
((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).EndInit()
this.ResumeLayout(false)
this.PerformLayout()
}
#endregion
private System.Windows.Forms.Button button1
private System.Windows.Forms.Button button2
private System.Windows.Forms.Button button4
private System.Windows.Forms.TextBox textBox1
private System.Windows.Forms.Label label1
private System.Windows.Forms.Button button5
private System.Windows.Forms.TextBox textBox2
private System.Windows.Forms.RadioButton radioButton1
private System.Windows.Forms.RadioButton radioButton2
private System.Windows.Forms.TextBox textBox3
private System.Windows.Forms.TextBox textBox4
private System.Windows.Forms.TextBox textBox5
private System.Windows.Forms.DataGridView dataGridView1
private System.Windows.Forms.DataGridViewTextBoxColumn id
private System.Windows.Forms.DataGridViewTextBoxColumn name
private System.Windows.Forms.DataGridViewTextBoxColumn address
private System.Windows.Forms.TextBox textBox7
private System.Windows.Forms.TextBox textBox8
private System.Windows.Forms.TextBox textBox9
private System.Windows.Forms.Button button3
}
}
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