原创企业级控件库之组合查询控件
发布日期：2010年12月10日星期五 作者:EricHu
无论对于企业还是对于软件开发者来说，拥有自己的一套常用控件库，对于开发产品来说不仅可以缩短开发时间，提高开发效率，同时对一个企业整个产品的形象也会大大提高。本系列控件为作者在实际开发应用中总结出来，且成功应用于多个项目。现对整个控件库一一讲解，最后我会把整个控件库开源，方便你的使用，同时会给一个综合应用这些控件的实例。
成就别人、等于成就自己。我没什么要求，欢迎大家多多支持与评论，觉得不错的，记得点击文章左下角的”关注博客”，就这么简单。
整个控件样式如下：
说明:
1、本控件分为组合查询与固定查询两种，上图为组合查询。固定查询见下图。
2、组合查询以下几部份组成：
a. 查询项:设置查询的项目，通俗点就是表中的字段。
b. 运算符:设置查询条件，如:等于、大小、包含、为空等。
c. 值：设置查询的值。
d. 组合方式：当查询条件大于两个时，其组合条件可设为：与方式、或方式、非方式三种。
e. 新增：新增查询条件到组合条件框。
f. 清除：当输入错误时，可以清除组合条件框中的组合查询条件。
g. 查询：当用户单击查询时，返回查询表达式，供用户使用。
h. 固定查询：当用户单击固定查询时，控件变成固定查询控件，同时，固定查询变成“组合查询”，如下图:
3、本控件特点：
a. 对用户输入的危险字符进行了屏蔽，可有效防止对数据库的破坏。
b. 控件返回的查询条件都是合法的Sql语句中的Where条件表达式，可以直接使用。
c. 开放源代码，用户可以根据自己的需要进行定制，消除你的后顾之优。
4、本控件类图如下所示：
5、本控件核心代码
a. 得到组合查询表达式
#region 组合查询表达式
/// <summary>
/// 单击[查询]按钮时发生
/// </summary>
[Category("组合查询"), Description("单击[查询]按钮时发生。"), Browsable(true)]
public event EventHandler OnQueryClicked;
private string _queryExpression;
/// <summary>
/// 最终的查询表达式，可直接用于Where子句中
/// </summary>
[Category("组合查询"), Description("最终的查询表达式，可直接用于Where子句中。"), Browsable(false)]
public string QueryExpression
{
get { return _queryExpression; }
set
{
_queryExpression = value;
if (OnQueryClicked != null)
{
OnQueryClicked(this, null);
}
}
}
#endregion
b. 设置查询项中要显示的数据列表
#region 设置查询项中要显示的数据列表
/// <summary>
/// 设置查询项中要显示的数据列表(推荐使用这个方法)
/// </summary>
/// <param name="dicListQueryItems">表示键和值的集合(键：数据字段，值：数据字段对应的数据类型)</param>
public void SetQueryItems(Dictionary<string, string> dicListQueryItems)
{
cboQueryItems.Items.Clear();
dicQueryItem = null;
dicQueryItem = dicListQueryItems;
foreach (KeyValuePair<string, string> kvp in dicListQueryItems)
{
cboQueryItems.Items.Add(kvp.Key);
}
if (cboQueryItems.Items.Contains("案卷号"))//把案卷号显示在第一个
{
cboQueryItems.Items.Remove("案卷号");
cboQueryItems.Items.Insert(0, "案卷号");
}
cboQueryItems.SelectedIndex = 0;
}
/// <summary>
/// 设置查询项中要显示的数据列表
/// </summary>
/// <param name="sQueryItems">string类型数组</param>
public void SetQueryItems(string[] sQueryItems)
{
cboQueryItems.Items.Clear();
foreach (string queryItem in sQueryItems)
{
cboQueryItems.Items.Add(queryItem);
}
cboQueryItems.SelectedIndex = 0;
}
/// <summary>
/// 设置查询项中要显示的数据列表
/// </summary>
/// <param name="listQueryItems">List泛型</param>
public void SetQueryItems(List<string> listQueryItems)
{
cboQueryItems.Items.Clear();
foreach (string queryItem in listQueryItems)
{
cboQueryItems.Items.Add(queryItem);
}
cboQueryItems.SelectedIndex = 0;
}
#endregion
C．增加查询条件
代码
#region 增加查询条件单击事件 btnAddQueryCondition_Click(object sender, EventArgs e)
private void btnAddQueryCondition_Click(object sender, EventArgs e)
{
if (cboQueryItems.Items.Count == 0)
{
DialogHelper.ShowErrorMsg("查询项为空，不能进行查询！");
return;
}
else
{
string sQueryItem = cboQueryItems.Text.Trim(); //要查询的项
string sQueryValue = txtQueryValue.Text.Trim(); //查询项的值
string sCombinMode = string.Empty; //组合方式
string sQueryExpress = string.Empty;//查询条件表达式
if (cboOperator.Text != "为空" && cboOperator.Text != "不为空")
{
if (string.IsNullOrEmpty(txtQueryValue.Text.Trim()))
{
DialogHelper.ShowWarningMsg("必须输入查询项的值!");
txtQueryValue.Focus();
return;
}
else
{
if (StringHelper.HasDangerousWord(txtQueryValue.Text.Trim()))
{
DialogHelper.ShowWarningMsg("对不起，你的输入含有危险字符，请重新输入！");
txtQueryValue.Clear();
txtQueryValue.Focus();
return;
}
}
}
switch (cboCombinMode.Text)
{
case "与方式":
sCombinMode = "AND";
break;
case "或方式":
sCombinMode = "OR";
break;
case "非方式":
sCombinMode = "AND NOT";
break;
default:
break;
}
#region 条件设置
switch (cboOperator.Text)
{
case "包含":
sQueryExpress = sQueryItem + " LIKE '%" + sQueryValue + "%'";
break;
case "左包含":
sQueryExpress = sQueryItem + " LIKE '" + sQueryValue + "%'";
break;
case "右包含":
sQueryExpress = sQueryItem + " LIKE '%" + sQueryValue + "'";
break;
case "为空":
sQueryExpress = sQueryItem + " IS NULL OR " + sQueryItem + "= ''";
break;
case "不为空":
sQueryExpress = sQueryItem + " IS NOT NULL And " + sQueryItem + "!= ''";
break;
case "大于":
if (dicQueryItem.Count == 0)
{
sQueryExpress = sQueryItem + " > " + sQueryValue;
}
else
{
foreach (KeyValuePair<string, string> kvp in dicQueryItem)
{
if (cboQueryItems.Text == kvp.Key)
{
if ((kvp.Value == "System.DateTime" || kvp.Value == "System.String")
&& kvp.Key != "案卷号") //kvp.Key != "案卷号"主是要因为案卷号是字符型，案卷号>'90',得不到正确结果，所以在此这样做
{
sQueryExpress = sQueryItem + " > '" + sQueryValue + "'";
}
else
{
sQueryExpress = sQueryItem + " > " + sQueryValue;
}
}
}
}
break;
case "大于或等于":
if (dicQueryItem.Count == 0)
{
sQueryExpress = sQueryItem + " >= " + sQueryValue;
}
else
{
foreach (KeyValuePair<string, string> kvp in dicQueryItem)
{
if (cboQueryItems.Text == kvp.Key)
{
if ((kvp.Value == "System.DateTime" || kvp.Value == "System.String") && kvp.Key != "案卷号")
{
sQueryExpress = sQueryItem + " >= '" + sQueryValue + "'";
}
else
{
sQueryExpress = sQueryItem + " >= " + sQueryValue;
}
}
}
}
break;
case "等于":
if (dicQueryItem.Count == 0)
{
sQueryExpress = sQueryItem + " = " + sQueryValue;
}
else
{
foreach (KeyValuePair<string, string> kvp in dicQueryItem)
{
if (cboQueryItems.Text == kvp.Key)
{
//---3
if (kvp.Value == "System.DateTime" || kvp.Value == "System.String")
{
sQueryExpress = sQueryItem + " = '" + sQueryValue + "'";
}
else
{
sQueryExpress = sQueryItem + " = " + sQueryValue;
}
}
}
}
break;
case "小于或等于":
if (dicQueryItem.Count == 0)
{
sQueryExpress = sQueryItem + " <= " + sQueryValue;
}
else
{
foreach (KeyValuePair<string, string> kvp in dicQueryItem)
{
if (cboQueryItems.Text == kvp.Key)
{
if ((kvp.Value == "System.DateTime" || kvp.Value == "System.String") && kvp.Key != "案卷号")
{
sQueryExpress = sQueryItem + " <= '" + sQueryValue + "'";
}
else
{
sQueryExpress = sQueryItem + " <= " + sQueryValue;
}
}
}
}
break;
case "小于":
if (dicQueryItem.Count == 0)
{
sQueryExpress = sQueryItem + " < " + sQueryValue;
}
else
{
foreach (KeyValuePair<string, string> kvp in dicQueryItem)
{
if (cboQueryItems.Text == kvp.Key)
{
if ((kvp.Value == "System.DateTime" || kvp.Value == "System.String") && kvp.Key != "案卷号")
{
sQueryExpress = sQueryItem + " < '" + sQueryValue + "'";
}
else
{
sQueryExpress = sQueryItem + " < " + sQueryValue;
}
}
}
}
break;
default:
break;
}
if (!string.IsNullOrEmpty(txtQueryCondition.Text.Trim()))
{
sQueryExpress = sCombinMode + " " + sQueryExpress;
}
txtQueryCondition.AppendText(" " + sQueryExpress);
#endregion
}
}
#endregion
6、 控件编译后，你可把编译后的dll文件直接拖运到Microsoft Visual Studi工具箱中，就可以看到我们的组合查询控件了。在实际应用中，仅需以下两个步骤即可完成整个代码。
a.在窗体社会分配加载时绑定相应的查询项
代码
/// <summary>
/// 增加测试数据
/// </summary>
private void BindTestData()
{
dtTest = new DataTable();
dtTest.Columns.Add(new DataColumn("身份证号", typeof(System.String)));
dtTest.Columns.Add(new DataColumn("姓名", typeof(System.String)));
dtTest.Columns.Add(new DataColumn("QQ", typeof(System.String)));
dtTest.Columns.Add(new DataColumn("年龄", typeof(System.Int16)));
dtTest.Columns.Add(new DataColumn("出生时间", typeof(System.DateTime)));
}
private void FrmUcCombinQueryTest_Shown(object sender, EventArgs e)
{
BindTestData();
//绑定查询项
Dictionary<string, string> dicListQueryItems = new Dictionary<string, string>();
foreach (DataColumn dc in dtTest.Columns)
{
dicListQueryItems.Add(dc.ColumnName, dc.DataType.ToString());
}
ucCombinQueryTest.SetQueryItems(dicListQueryItems);
}
b.单击查询时，返回给用户的查询表达式，用户直接得到使用，在组合查询的OnQueryClicked事件代码中进行处理。
privatevoid ucCombinQueryTest_OnQueryClicked(object sender, EventArgs e)
{
//得到查询表达式
MessageBox.Show(ucCombinQueryTest.QueryExpression);
}
{
//得到查询表达式
MessageBox.Show(ucCombinQueryTest.QueryExpression);
}
7、下面给出组合查询控件完整代码
#region 版权信息
/*---------------------------------------------------------------------*
// Copyright (C) 2008 http://www.cnblogs.com/huyong
// 版权所有。
// 项目 名称：《Winform通用控件库》
// 文 件 名： UcCombinQuery.cs
// 类 全 名： DotNet.Controls.UcCombinQuery
// 描 述: 组合查询控件
// 创建 时间： 2008-08-05
// 创建人信息： [**** 姓名:胡勇 QQ:406590790 E-Mail:406590790@qq.com *****]
*----------------------------------------------------------------------*/
#endregion
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;
using DotNet.Common;
namespace DotNet.Controls
{
/// <summary>
/// 组合查询控件
/// UcCombinQuery
/// 修改纪录
/// 2010-12-6 胡勇 优化相关代码。
/// 2010-11-29 胡勇 取消对：清除组合查询条件时的提示。
/// 2010-11-8 胡勇 要是查询项中包含"案卷号",则把案卷号移动到第一个查询项。
/// 2010-11-5 胡勇 对案卷号的查询，不加单引号。
/// 2010-8-30 胡勇 对查询字符型字段进行>、<、>=、<=、=操作时，其值自动加单引号。
/// 2008-08-05 胡勇 创建组合查询控件
/// <author>
/// <name>胡勇</name>
/// <QQ>406590790</QQ>
/// <Email>406590790@qq.com</Email>
/// </author>
/// </summary>
[ToolboxItem(true)]
[DefaultEvent("OnQueryClicked")]
[ToolboxBitmap(typeof(UcCombinQuery), "DotNet.Controls.Images.UcCombinQuery.bmp")]
[Description("组合查询控件")]
public partial class UcCombinQuery : UserControl
{
#region 公共变量
Dictionary<string, string> dicQueryItem = new Dictionary<string, string>();
#endregion
#region 公共方法
/// <summary>
/// 查询模式
/// </summary>
public enum QueryMode
{
/// <summary>
/// 固定查询
/// </summary>
FixQueryMode = 0x0001,
/// <summary>
/// 组合查询
/// </summary>
CompositeQueryMode = 0x0002
}
/// <summary>
/// 设置查询模式
/// </summary>
/// <param name="queryMode">查询模式</param>
public void SetQueryMode(QueryMode queryMode)
{
if (queryMode == QueryMode.FixQueryMode)
{
btnQueryMode.Text = "固定查询";
}
else
{
btnQueryMode.Text = "组合查询";
}
btnQueryMode_Click(null, null);
}
#endregion
#region 可见性属性
private bool _QueryModeButtomVisible = true;
/// <summary>
/// 组合查询按钮是否可见
/// </summary>
[Category("组合查询"), Description("组合查询是否可见。")]
public bool QueryModeButtomVisible
{
get
{
return _QueryModeButtomVisible;
}
set
{
_QueryModeButtomVisible = value;
if (!_QueryModeButtomVisible)
{
toolStripSeparator1.Visible = false;
}
this.btnQueryMode.Visible = _QueryModeButtomVisible;
}
}
#endregion
#region 构造函数
public UcCombinQuery()
{
InitializeComponent();
}
#endregion
#region 组合查询表达式
/// <summary>
/// 单击[查询]按钮时发生
/// </summary>
[Category("组合查询"), Description("单击[查询]按钮时发生。"), Browsable(true)]
public event EventHandler OnQueryClicked;
private string _queryExpression;
/// <summary>
/// 最终的查询表达式，可直接用于Where子句中
/// </summary>
[Category("组合查询"), Description("最终的查询表达式，可直接用于Where子句中。"), Browsable(false)]
public string QueryExpression
{
get { return _queryExpression; }
set
{
_queryExpression = value;
if (OnQueryClicked != null)
{
OnQueryClicked(this, null);
}
}
}
#endregion
#region 查询项相关控制
#region 设置查询项中要显示的数据列表
/// <summary>
/// 设置查询项中要显示的数据列表(推荐使用这个方法)
/// </summary>
/// <param name="dicListQueryItems">表示键和值的集合(键：数据字段，值：数据字段对应的数据类型)</param>
public void SetQueryItems(Dictionary<string, string> dicListQueryItems)
{
cboQueryItems.Items.Clear();
dicQueryItem = null;
dicQueryItem = dicListQueryItems;
foreach (KeyValuePair<string, string> kvp in dicListQueryItems)
{
cboQueryItems.Items.Add(kvp.Key);
}
if (cboQueryItems.Items.Contains("案卷号"))//把案卷号显示在第一个
{
cboQueryItems.Items.Remove("案卷号");
cboQueryItems.Items.Insert(0, "案卷号");
}
cboQueryItems.SelectedIndex = 0;
}
/// <summary>
/// 设置查询项中要显示的数据列表
/// </summary>
/// <param name="sQueryItems">string类型数组</param>
public void SetQueryItems(string[] sQueryItems)
{
cboQueryItems.Items.Clear();
foreach (string queryItem in sQueryItems)
{
cboQueryItems.Items.Add(queryItem);
}
cboQueryItems.SelectedIndex = 0;
}
/// <summary>
/// 设置查询项中要显示的数据列表
/// </summary>
/// <param name="listQueryItems">List泛型</param>
public void SetQueryItems(List<string> listQueryItems)
{
cboQueryItems.Items.Clear();
foreach (string queryItem in listQueryItems)
{
cboQueryItems.Items.Add(queryItem);
}
cboQueryItems.SelectedIndex = 0;
}
#endregion
/// <summary>
/// 设置查询项的选择索引项
/// </summary>
/// <param name="index">索引的下标</param>
public void SetQueryItemsSelectIndex(int index)
{
this.cboQueryItems.SelectedIndex = index;
}
/// <summary>
/// 设置查询项的选择内容
/// </summary>
/// <param name="sTxt">查询项选中的内容</param>
public void SetQueryItemSelectText(string sTxt)
{
this.cboQueryItems.SelectedText =sTxt;
}
/// <summary>
/// 清空选项值
/// </summary>
public void ClearQueryItems()
{
cboQueryItems.Items.Clear();
}
#endregion
#region 事件代码
#region 窗体Load事件 UcCombinQuery_Load(object sender, EventArgs e)
private void UcCombinQuery_Load(object sender, EventArgs e)
{
this.Height = 25;
}
#endregion
#region 设置查询模式(组合查询或固定查询:btnQueryMode_Click(object sender, EventArgs e)
private void btnQueryMode_Click(object sender, EventArgs e)
{
cboQueryItems.Focus();
//spContainerHorizontal.Panel2Collapsed = !spContainerHorizontal.Panel2Collapsed;
lblOperator.Visible = !lblOperator.Visible;
cboOperator.Visible = !cboOperator.Visible;
lblCombinMode.Visible = !lblCombinMode.Visible;
cboCombinMode.Visible = !cboCombinMode.Visible;
sp1.Visible = !sp1.Visible;
if (btnQueryMode.Text == "固定查询")
{
btnQueryMode.Text = "组合查询";
btnAddQueryCondition.Visible = !btnAddQueryCondition.Visible;
btnClsQueryCondition.Visible = !btnClsQueryCondition.Visible;
this.Height = 25;
btnQueryMode.Image = DotNet.Controls.Properties.Resources.组合查询;//导入图片
}
else if (btnQueryMode.Text == "组合查询")
{
txtQueryCondition.Clear();
cboOperator.SelectedIndex = 0;
cboCombinMode.SelectedIndex = 0;
btnAddQueryCondition.Visible = !btnAddQueryCondition.Visible;
btnClsQueryCondition.Visible = !btnClsQueryCondition.Visible;
this.Height = 86;
btnQueryMode.Text = "固定查询";
btnQueryMode.Image = DotNet.Controls.Properties.Resources.固定查询;
}
}
#endregion
#region 增加查询条件单击事件 btnAddQueryCondition_Click(object sender, EventArgs e)
private void btnAddQueryCondition_Click(object sender, EventArgs e)
{
if (cboQueryItems.Items.Count == 0)
{
DialogHelper.ShowErrorMsg("查询项为空，不能进行查询！");
return;
}
else
{
string sQueryItem = cboQueryItems.Text.Trim(); //要查询的项
string sQueryValue = txtQueryValue.Text.Trim(); //查询项的值
string sCombinMode = string.Empty; //组合方式
string sQueryExpress = string.Empty;//查询条件表达式
if (cboOperator.Text != "为空" && cboOperator.Text != "不为空")
{
if (string.IsNullOrEmpty(txtQueryValue.Text.Trim()))
{
DialogHelper.ShowWarningMsg("必须输入查询项的值!");
txtQueryValue.Focus();
return;
}
else
{
if (StringHelper.HasDangerousWord(txtQueryValue.Text.Trim()))
{
DialogHelper.ShowWarningMsg("对不起，你的输入含有危险字符，请重新输入！");
txtQueryValue.Clear();
txtQueryValue.Focus();
return;
}
}
}
switch (cboCombinMode.Text)
{
case "与方式":
sCombinMode = "AND";
break;
case "或方式":
sCombinMode = "OR";
break;
case "非方式":
sCombinMode = "AND NOT";
break;
default:
break;
}
#region 条件设置
switch (cboOperator.Text)
{
case "包含":
sQueryExpress = sQueryItem + " LIKE '%" + sQueryValue + "%'";
break;
case "左包含":
sQueryExpress = sQueryItem + " LIKE '" + sQueryValue + "%'";
break;
case "右包含":
sQueryExpress = sQueryItem + " LIKE '%" + sQueryValue + "'";
break;
case "为空":
sQueryExpress = sQueryItem + " IS NULL OR " + sQueryItem + "= ''";
break;
case "不为空":
sQueryExpress = sQueryItem + " IS NOT NULL And " + sQueryItem + "!= ''";
break;
case "大于":
if (dicQueryItem.Count == 0)
{
sQueryExpress = sQueryItem + " > " + sQueryValue;
}
else
{
foreach (KeyValuePair<string, string> kvp in dicQueryItem)
{
if (cboQueryItems.Text == kvp.Key)
{
if ((kvp.Value == "System.DateTime" || kvp.Value == "System.String")
&& kvp.Key != "案卷号") //kvp.Key != "案卷号"主是要因为案卷号是字符型，案卷号>'90',得不到正确结果，所以在此这样做
{
sQueryExpress = sQueryItem + " > '" + sQueryValue + "'";
}
else
{
sQueryExpress = sQueryItem + " > " + sQueryValue;
}
}
}
}
break;
case "大于或等于":
if (dicQueryItem.Count == 0)
{
sQueryExpress = sQueryItem + " >= " + sQueryValue;
}
else
{
foreach (KeyValuePair<string, string> kvp in dicQueryItem)
{
if (cboQueryItems.Text == kvp.Key)
{
if ((kvp.Value == "System.DateTime" || kvp.Value == "System.String") && kvp.Key != "案卷号")
{
sQueryExpress = sQueryItem + " >= '" + sQueryValue + "'";
}
else
{
sQueryExpress = sQueryItem + " >= " + sQueryValue;
}
}
}
}
break;
case "等于":
if (dicQueryItem.Count == 0)
{
sQueryExpress = sQueryItem + " = " + sQueryValue;
}
else
{
foreach (KeyValuePair<string, string> kvp in dicQueryItem)
{
if (cboQueryItems.Text == kvp.Key)
{
//---3
if (kvp.Value == "System.DateTime" || kvp.Value == "System.String")
{
sQueryExpress = sQueryItem + " = '" + sQueryValue + "'";
}
else
{
sQueryExpress = sQueryItem + " = " + sQueryValue;
}
}
}
}
break;
case "小于或等于":
if (dicQueryItem.Count == 0)
{
sQueryExpress = sQueryItem + " <= " + sQueryValue;
}
else
{
foreach (KeyValuePair<string, string> kvp in dicQueryItem)
{
if (cboQueryItems.Text == kvp.Key)
{
if ((kvp.Value == "System.DateTime" || kvp.Value == "System.String") && kvp.Key != "案卷号")
{
sQueryExpress = sQueryItem + " <= '" + sQueryValue + "'";
}
else
{
sQueryExpress = sQueryItem + " <= " + sQueryValue;
}
}
}
}
break;
case "小于":
if (dicQueryItem.Count == 0)
{
sQueryExpress = sQueryItem + " < " + sQueryValue;
}
else
{
foreach (KeyValuePair<string, string> kvp in dicQueryItem)
{
if (cboQueryItems.Text == kvp.Key)
{
if ((kvp.Value == "System.DateTime" || kvp.Value == "System.String") && kvp.Key != "案卷号")
{
sQueryExpress = sQueryItem + " < '" + sQueryValue + "'";
}
else
{
sQueryExpress = sQueryItem + " < " + sQueryValue;
}
}
}
}
break;
default:
break;
}
if (!string.IsNullOrEmpty(txtQueryCondition.Text.Trim()))
{
sQueryExpress = sCombinMode + " " + sQueryExpress;
}
txtQueryCondition.AppendText(" " + sQueryExpress);
#endregion
}
}
#endregion
#region 清除查询条件 btnClsQueryCondition_Click(object sender, EventArgs e)
//清除查询条件
private void btnClsQueryCondition_Click(object sender, EventArgs e)
{
if (txtQueryCondition.Text.Trim() != string.Empty)
{
txtQueryCondition.Clear();
}
}
#endregion
#region 查询单击事件 btnQuery_Click(object sender, EventArgs e)
private void btnQuery_Click(object sender, EventArgs e)
{
if (cboQueryItems.Items.Count == 0)
{
DialogHelper.ShowErrorMsg("查询项为空！");
return;
}
else
{
if (btnQueryMode.Text == "组合查询")
{
if (string.IsNullOrEmpty(txtQueryValue.Text.Trim()))
{
QueryExpression = "1 = 1";
return;
}
else
{
if (StringHelper.HasDangerousWord(txtQueryValue.Text.Trim())) //危险字符判断
{
DialogHelper.ShowWarningMsg("对不起，你的输入包含危险字符，请重新输入！");
txtQueryValue.Clear();
txtQueryValue.Focus();
return;
}
else
{
if (dicQueryItem.Count == 0)
{
QueryExpression = cboQueryItems.Text + " = '" + txtQueryValue.Text.Trim() + "'";//精确查询
}
else
{
foreach (KeyValuePair<string, string> kvp in dicQueryItem)
{
if (cboQueryItems.Text == kvp.Key)
{
if (kvp.Value == "System.DateTime")
{
QueryExpression = cboQueryItems.Text + " = '" + txtQueryValue.Text.Trim() + "'";//精确查询
}
else
{
QueryExpression = cboQueryItems.Text + " = '" + txtQueryValue.Text.Trim() + "'";//精确查询
}
}
}
}
}
}
}
else
{
if (string.IsNullOrEmpty(txtQueryCondition.Text.Trim()))
{
if (cboOperator.Text != "为空" && cboOperator.Text != "不为空")
{
if (txtQueryValue.Text.Trim() == string.Empty)
{
DialogHelper.ShowWarningMsg("必须输入查询项的值!");
txtQueryValue.Focus();
return;
}
else
{
if (StringHelper.HasDangerousWord(txtQueryValue.Text.Trim()))
{
DialogHelper.ShowWarningMsg("对不起，你的输入含有危险字符，请重新输入！");
txtQueryValue.Clear();
txtQueryValue.Focus();
return;
}
else
{
btnAddQueryCondition_Click(sender, e);
}
}
}
else
{
btnAddQueryCondition_Click(sender, e);
}
}
QueryExpression = txtQueryCondition.Text.Trim();
}
}
}
#endregion
#endregion
}
}