WinForm 利用Tag快速获取已赋值控件的条件
一、\WindowsFormsApp1\Form1.Designer.cs
namespace WindowsFormsApp1
{
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 - 不要修改
/// 使用代码编辑器修改此方法的内容。
/// </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 = "按用户名搜索";
//
// 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 = "按用户状态搜索";
//
// 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 = "按所属题库搜索";
//
// 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 = "是否有离线试题";
//
// 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 = "是否有审题试题";
//
// 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 = "搜索";
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>
/// 递归获取所有控件（不包含容器控件）
/// </summary>
/// <param name="ctc"></param>
/// <param name="list"></param>
private void GetControl(Control.ControlCollection ctc,List<Control> list)
{
foreach (Control ct in ctc)
{
//C# 只遍历窗体的子控件，不遍历孙控件
//当窗体上的控件有子控件时，需要用递归的方法遍历，才能全部列出窗体上的控件
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}[email protected]{0} ", tag);
paramList.Add(new SqlParameter("@"+tag, tb.Text.Trim()));
}
if(c is RadioButton && rb.Checked && rb.Text!="全部")
{
sb.AppendFormat(" and {0}[email protected]{0} ", tag);
paramList.Add(new SqlParameter("@" + tag, rb.Text=="是"));
}
if (c is ComboBox && cb.Text.Trim()!="")
{
sb.AppendFormat(" and {0}[email protected]{0} ", tag);
paramList.Add(new SqlParameter("@" + tag, cb.Text.Trim()));
}
}
MessageBox.Show(sb.ToString());
}
}
}