//构造表达式，存放到m_lstExpression集合里面
public void GetExpression(string strPropertyName, object strValue, ExpressionTypeEnum expressType)
{
Expression expRes = null;
MemberExpression member = Expression.PropertyOrField(m_Parameter, strPropertyName);
if (expressType == ExpressionTypeEnum.Contains)
{
expRes = Expression.Call(member, typeof(string).GetMethod("Contains"), Expression.Constant(strValue));
}
else if (expressType == ExpressionTypeEnum.Equal)
{
expRes = Expression.Equal(member, Expression.Constant(strValue, member.Type));
}
else if (expressType == ExpressionTypeEnum.LessThan)
{
expRes = Expression.LessThan(member, Expression.Constant(strValue, member.Type));
}
else if (expressType == ExpressionTypeEnum.LessThanOrEqual)
{
expRes = Expression.LessThanOrEqual(member, Expression.Constant(strValue, member.Type));
}
else if (expressType == ExpressionTypeEnum.GreaterThan)
{
expRes = Expression.GreaterThan(member, Expression.Constant(strValue, member.Type));
}
else if (expressType == ExpressionTypeEnum.GreaterThanOrEqual)
{
expRes = Expression.GreaterThanOrEqual(member, Expression.Constant(strValue, member.Type));
}
//return expRes;
m_lstExpression.Add(expRes);
}
/// <summary>
/// Autor: Olonyl Rocha Landeros
/// Fecha: 08/07/2011
/// Descripcion: Establecer tipo de dato predefinido que se puede introducir en el control TextBox
/// </summary>
public void SetDefinedValidator(ExpressionTypeEnum definedExpressionType)
{
revTextEdit.Enabled = false;
tbTextEdit_FilteredTextBoxExtender.Enabled = true;
tbTextEdit_TextBoxWatermarkExtender.Enabled = false;
switch (definedExpressionType)
{
case ExpressionTypeEnum.Integer:
tbTextEdit_FilteredTextBoxExtender.FilterType = AjaxControlToolkit.FilterTypes.Numbers;
break;
case ExpressionTypeEnum.LetterUpperCase:
tbTextEdit_FilteredTextBoxExtender.FilterType = AjaxControlToolkit.FilterTypes.UppercaseLetters;
break;
case ExpressionTypeEnum.LetterLowerCase:
tbTextEdit_FilteredTextBoxExtender.FilterType = AjaxControlToolkit.FilterTypes.LowercaseLetters;
break;
case ExpressionTypeEnum.None:
tbTextEdit_FilteredTextBoxExtender.Enabled = false;
rfvTextEdit.Enabled = false;
break;
case ExpressionTypeEnum.Number:
revTextEdit.Enabled = true;
revTextEdit.ValidationExpression = "[0-9]+(\\.[0-9][0-9]?)?";
tbTextEdit_FilteredTextBoxExtender.FilterType = AjaxControlToolkit.FilterTypes.Custom;
tbTextEdit_FilteredTextBoxExtender.ValidChars = "0123456789.";
break;
case ExpressionTypeEnum.Email:
tbTextEdit_TextBoxWatermarkExtender.Enabled = true;
tbTextEdit_FilteredTextBoxExtender.Enabled = false;
rfvTextEdit.Enabled = false;
revTextEdit.Enabled = true;
revTextEdit.ValidationExpression = "\\w+([-+.']\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*";
break;
case ExpressionTypeEnum.LetterAndNumber:
tbTextEdit_FilteredTextBoxExtender.FilterType = AjaxControlToolkit.FilterTypes.Custom;
tbTextEdit_FilteredTextBoxExtender.ValidChars = "qwertyuiopasdfghjklñzxcvbnmQWERTYUIOPASDFGHJKLÑZXCVBNM0123456789 ";
break;
case ExpressionTypeEnum.Percent:
revTextEdit.Enabled = true;
revTextEdit_ValidatorCalloutExtender.Enabled = true;
rfvTextEdit_ValidatorCalloutExtender.Enabled = false;
rfvTextEdit.Enabled = false;
revTextEdit.ValidationExpression = "^(100(?:.0{1,2})?%?|0*?.\\d{1,2}%?|\\d{1,2}(?:.\\d{1,2})?%?)$";
tbTextEdit_FilteredTextBoxExtender.FilterType = AjaxControlToolkit.FilterTypes.Custom;
tbTextEdit_FilteredTextBoxExtender.ValidChars = "0123456789";
break;
case ExpressionTypeEnum.BothCase:
tbTextEdit_FilteredTextBoxExtender.FilterType = AjaxControlToolkit.FilterTypes.Custom;
tbTextEdit_FilteredTextBoxExtender.ValidChars = "qwertyuiopasdfghjklñzxcvbnmQWERTYUIOPASDFGHJKLÑZXCVBNM ";
break;
case ExpressionTypeEnum.Parameter:
tbTextEdit_FilteredTextBoxExtender.FilterType = AjaxControlToolkit.FilterTypes.Custom;
tbTextEdit_FilteredTextBoxExtender.ValidChars = "qwertyuiopasdfghjklñzxcvbnmQWERTYUIOPASDFGHJKLÑZXCVBNM0123456789@_:/., ";
break;
}
}
//多个字段or同一个值
public void GetExpression(List <string> listStrPropertyName, object strValue, ExpressionTypeEnum expressType)
{
Expression expRes = null;
foreach (var itemValue in listStrPropertyName)
{
MemberExpression member = Expression.PropertyOrField(m_Parameter, itemValue);
if (expressType == ExpressionTypeEnum.Contains)
{
if (expRes == null)
{
expRes = Expression.Call(member, typeof(string).GetMethod("Contains"), Expression.Constant(strValue));
//expRes = Expression.Equal(member, Expression.Constant(strValue, member.Type));
}
else
{
expRes = Expression.Or(expRes, Expression.Call(member, typeof(string).GetMethod("Contains"), Expression.Constant(strValue)));
}
}
else
{
if (expRes == null)
{
expRes = Expression.Equal(member, Expression.Constant(strValue, member.Type));
}
else
{
expRes = Expression.Or(expRes, Expression.Equal(member, Expression.Constant(strValue, member.Type)));
}
}
}
m_lstExpression.Add(expRes);
}
