WinForm 利用Tag快速獲取已賦值控制元件的條件
阿新 • • 發佈：2018-12-25
一、\WindowsFormsApp1\Form1.Designer.cs
namespace WindowsFormsApp1 { partial class Form1 { /// <summary> /// 必需的設計器變數。 /// </summary> private System.ComponentModel.IContainer components = null; /// <summary> /// 清理所有正在使用的資源。 /// </summary> /// <param name="disposing">如果應釋放託管資源，為 true；否則為 false。</param> protected override void Dispose(bool disposing) { if (disposing && (components != null)) { components.Dispose(); } base.Dispose(disposing); } #region Windows 窗體設計器生成的程式碼 /// <summary> /// 設計器支援所需的方法 - 不要修改 /// 使用程式碼編輯器修改此方法的內容。 /// </summary> private void InitializeComponent() { this.label1 = new System.Windows.Forms.Label(); this.txt_username = new System.Windows.Forms.TextBox(); this.label2 = new System.Windows.Forms.Label(); this.cbUState = new System.Windows.Forms.ComboBox(); this.cbTQList = new System.Windows.Forms.ComboBox(); this.label3 = new System.Windows.Forms.Label(); this.label4 = new System.Windows.Forms.Label(); this.label5 = new System.Windows.Forms.Label(); this.panel1 = new System.Windows.Forms.Panel(); this.btnSearch = new System.Windows.Forms.Button(); this.dataGridView1 = new System.Windows.Forms.DataGridView(); this.rdoIsoltestqusYes = new System.Windows.Forms.RadioButton(); this.rdoIsoltestqusNo = new System.Windows.Forms.RadioButton(); this.rdo_isoltestqus_all = new System.Windows.Forms.RadioButton(); this.panel2 = new System.Windows.Forms.Panel(); this.rdo_istqaudit_all = new System.Windows.Forms.RadioButton(); this.rdo_istqaudit_no = new System.Windows.Forms.RadioButton(); this.rdo_istqaudit_yes = new System.Windows.Forms.RadioButton(); this.panel1.SuspendLayout(); ((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).BeginInit(); this.panel2.SuspendLayout(); this.SuspendLayout(); // // label1 // this.label1.AutoSize = true; this.label1.Location = new System.Drawing.Point(12, 14); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(77, 12); this.label1.TabIndex = 0; this.label1.Text = "按使用者名稱搜尋"; // // txt_username // this.txt_username.Location = new System.Drawing.Point(100, 10); this.txt_username.Name = "txt_username"; this.txt_username.Size = new System.Drawing.Size(100, 21); this.txt_username.TabIndex = 1; this.txt_username.Tag = "username"; // // label2 // this.label2.AutoSize = true; this.label2.Location = new System.Drawing.Point(211, 14); this.label2.Name = "label2"; this.label2.Size = new System.Drawing.Size(89, 12); this.label2.TabIndex = 2; this.label2.Text = "按使用者狀態搜尋"; // // cbUState // this.cbUState.FormattingEnabled = true; this.cbUState.Location = new System.Drawing.Point(311, 10); this.cbUState.Name = "cbUState"; this.cbUState.Size = new System.Drawing.Size(121, 20); this.cbUState.TabIndex = 3; this.cbUState.Tag = "userstate"; // // cbTQList // this.cbTQList.FormattingEnabled = true; this.cbTQList.Location = new System.Drawing.Point(543, 10); this.cbTQList.Name = "cbTQList"; this.cbTQList.Size = new System.Drawing.Size(121, 20); this.cbTQList.TabIndex = 4; this.cbTQList.Tag = "intestqus"; // // label3 // this.label3.AutoSize = true; this.label3.Location = new System.Drawing.Point(443, 14); this.label3.Name = "label3"; this.label3.Size = new System.Drawing.Size(89, 12); this.label3.TabIndex = 5; this.label3.Text = "按所屬題庫搜尋"; // // label4 // this.label4.AutoSize = true; this.label4.Location = new System.Drawing.Point(12, 55); this.label4.Name = "label4"; this.label4.Size = new System.Drawing.Size(89, 12); this.label4.TabIndex = 6; this.label4.Text = "是否有離線試題"; // // label5 // this.label5.AutoSize = true; this.label5.Location = new System.Drawing.Point(300, 56); this.label5.Name = "label5"; this.label5.Size = new System.Drawing.Size(89, 12); this.label5.TabIndex = 9; this.label5.Text = "是否有審題試題"; // // panel1 // this.panel1.Controls.Add(this.rdo_isoltestqus_all); this.panel1.Controls.Add(this.rdoIsoltestqusNo); this.panel1.Controls.Add(this.rdoIsoltestqusYes); this.panel1.Location = new System.Drawing.Point(105, 41); this.panel1.Name = "panel1"; this.panel1.Size = new System.Drawing.Size(165, 40); this.panel1.TabIndex = 12; // // btnSearch // this.btnSearch.Location = new System.Drawing.Point(589, 50); this.btnSearch.Name = "btnSearch"; this.btnSearch.Size = new System.Drawing.Size(75, 23); this.btnSearch.TabIndex = 14; this.btnSearch.Text = "搜尋"; this.btnSearch.UseVisualStyleBackColor = true; this.btnSearch.Click += new System.EventHandler(this.btnSearch_Click); // // dataGridView1 // this.dataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize; this.dataGridView1.Location = new System.Drawing.Point(13, 91); this.dataGridView1.Name = "dataGridView1"; this.dataGridView1.RowTemplate.Height = 23; this.dataGridView1.Size = new System.Drawing.Size(651, 264); this.dataGridView1.TabIndex = 15; // // rdoIsoltestqusYes // this.rdoIsoltestqusYes.AutoSize = true; this.rdoIsoltestqusYes.Location = new System.Drawing.Point(74, 15); this.rdoIsoltestqusYes.Name = "rdoIsoltestqusYes"; this.rdoIsoltestqusYes.Size = new System.Drawing.Size(35, 16); this.rdoIsoltestqusYes.TabIndex = 9; this.rdoIsoltestqusYes.TabStop = true; this.rdoIsoltestqusYes.Tag = "isoltestqus"; this.rdoIsoltestqusYes.Text = "是"; this.rdoIsoltestqusYes.UseVisualStyleBackColor = true; // // rdoIsoltestqusNo // this.rdoIsoltestqusNo.AutoSize = true; this.rdoIsoltestqusNo.Location = new System.Drawing.Point(115, 14); this.rdoIsoltestqusNo.Name = "rdoIsoltestqusNo"; this.rdoIsoltestqusNo.Size = new System.Drawing.Size(35, 16); this.rdoIsoltestqusNo.TabIndex = 10; this.rdoIsoltestqusNo.TabStop = true; this.rdoIsoltestqusNo.Tag = "isoltestqus"; this.rdoIsoltestqusNo.Text = "否"; this.rdoIsoltestqusNo.UseVisualStyleBackColor = true; // // rdo_isoltestqus_all // this.rdo_isoltestqus_all.AutoSize = true; this.rdo_isoltestqus_all.Location = new System.Drawing.Point(23, 14); this.rdo_isoltestqus_all.Name = "rdo_isoltestqus_all"; this.rdo_isoltestqus_all.Size = new System.Drawing.Size(47, 16); this.rdo_isoltestqus_all.TabIndex = 11; this.rdo_isoltestqus_all.TabStop = true; this.rdo_isoltestqus_all.Tag = ""; this.rdo_isoltestqus_all.Text = "全部"; this.rdo_isoltestqus_all.UseVisualStyleBackColor = true; // // panel2 // this.panel2.Controls.Add(this.rdo_istqaudit_all); this.panel2.Controls.Add(this.rdo_istqaudit_no); this.panel2.Controls.Add(this.rdo_istqaudit_yes); this.panel2.Location = new System.Drawing.Point(395, 41); this.panel2.Name = "panel2"; this.panel2.Size = new System.Drawing.Size(165, 40); this.panel2.TabIndex = 13; // // rdo_istqaudit_all // this.rdo_istqaudit_all.AutoSize = true; this.rdo_istqaudit_all.Location = new System.Drawing.Point(23, 14); this.rdo_istqaudit_all.Name = "rdo_istqaudit_all"; this.rdo_istqaudit_all.Size = new System.Drawing.Size(47, 16); this.rdo_istqaudit_all.TabIndex = 11; this.rdo_istqaudit_all.TabStop = true; this.rdo_istqaudit_all.Tag = ""; this.rdo_istqaudit_all.Text = "全部"; this.rdo_istqaudit_all.UseVisualStyleBackColor = true; // // rdo_istqaudit_no // this.rdo_istqaudit_no.AutoSize = true; this.rdo_istqaudit_no.Location = new System.Drawing.Point(115, 14); this.rdo_istqaudit_no.Name = "rdo_istqaudit_no"; this.rdo_istqaudit_no.Size = new System.Drawing.Size(35, 16); this.rdo_istqaudit_no.TabIndex = 10; this.rdo_istqaudit_no.TabStop = true; this.rdo_istqaudit_no.Tag = "istqaudit"; this.rdo_istqaudit_no.Text = "否"; this.rdo_istqaudit_no.UseVisualStyleBackColor = true; // // rdo_istqaudit_yes // this.rdo_istqaudit_yes.AutoSize = true; this.rdo_istqaudit_yes.Location = new System.Drawing.Point(74, 15); this.rdo_istqaudit_yes.Name = "rdo_istqaudit_yes"; this.rdo_istqaudit_yes.Size = new System.Drawing.Size(35, 16); this.rdo_istqaudit_yes.TabIndex = 9; this.rdo_istqaudit_yes.TabStop = true; this.rdo_istqaudit_yes.Tag = "istqaudit"; this.rdo_istqaudit_yes.Text = "是"; this.rdo_istqaudit_yes.UseVisualStyleBackColor = true; // // Form1 // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(683, 367); this.Controls.Add(this.panel2); this.Controls.Add(this.dataGridView1); this.Controls.Add(this.btnSearch); this.Controls.Add(this.panel1); this.Controls.Add(this.label5); this.Controls.Add(this.label4); this.Controls.Add(this.label3); this.Controls.Add(this.cbTQList); this.Controls.Add(this.cbUState); this.Controls.Add(this.label2); this.Controls.Add(this.txt_username); this.Controls.Add(this.label1); this.Name = "Form1"; this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen; this.Text = "Form1"; this.panel1.ResumeLayout(false); this.panel1.PerformLayout(); ((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).EndInit(); this.panel2.ResumeLayout(false); this.panel2.PerformLayout(); this.ResumeLayout(false); this.PerformLayout(); } #endregion private System.Windows.Forms.Label label1; private System.Windows.Forms.TextBox txt_username; private System.Windows.Forms.Label label2; private System.Windows.Forms.ComboBox cbUState; private System.Windows.Forms.ComboBox cbTQList; private System.Windows.Forms.Label label3; private System.Windows.Forms.Label label4; private System.Windows.Forms.Label label5; private System.Windows.Forms.Panel panel1; private System.Windows.Forms.RadioButton rdo_isoltestqus_all; private System.Windows.Forms.RadioButton rdoIsoltestqusNo; private System.Windows.Forms.RadioButton rdoIsoltestqusYes; private System.Windows.Forms.Button btnSearch; private System.Windows.Forms.DataGridView dataGridView1; private System.Windows.Forms.Panel panel2; private System.Windows.Forms.RadioButton rdo_istqaudit_all; private System.Windows.Forms.RadioButton rdo_istqaudit_no; private System.Windows.Forms.RadioButton rdo_istqaudit_yes; } }
二、WindowsFormsApp1\Form1.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApp1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
/// <summary>
/// 遞迴獲取所有控制元件（不包含容器控制元件）
/// </summary>
/// <param name="ctc"></param>
/// <param name="list"></param>
private void GetControl(Control.ControlCollection ctc,List<Control> list)
{
foreach (Control ct in ctc)
{
//C# 只遍歷窗體的子控制元件，不遍歷孫控制元件
//當窗體上的控制元件有子控制元件時，需要用遞迴的方法遍歷，才能全部列出窗體上的控制元件
if (ct.HasChildren)
{
GetControl(ct.Controls, list);
}
else
{
list.Add(ct);
}
}
}
private void btnSearch_Click(object sender, EventArgs e)
{
StringBuilder sb = new StringBuilder("select * from user_data where 1=1 ");
List<SqlParameter> paramList = new List<SqlParameter>();
List<Control> list = new List<Control>();
GetControl(this.Controls, list);
foreach(Control c in list)
{
TextBox tb = c as TextBox;
RadioButton rb = c as RadioButton;
ComboBox cb = c as ComboBox;
string tag = c.Tag as string;
if (string.IsNullOrEmpty(tag))
continue;
if (c is TextBox && tb.Text.Trim() != "")
{
sb.AppendFormat(" and {0}