检查窗体中数据填写正确性的方法
//检查窗体中数据填写正确性的方法(类)
利用每一个控件的Tag属性，确定这个控件的数据类型，是否允许空 (个位为1表示不能为空，个位为0表示可以为空，十位数表示数据类型；参看源码)
如果改为使用正则表达式，可能更好。
//使用：
try
{
CheckFormControls.TCheckFormControls.CheckForm_Data(Object parentControl);
}
catch(Exception err)
{
MessageBox.Show(err.Message);
}
//源码
namespace CheckFormControls
{
public enum TKhyhDataType: int
{
Unknow=0,
Integer=1,
Float=2,
String=3,
Date=4,
DateTime=5,
Time=6,
Number=7 //it only use 0-9 numbers, for example: 08688122784
}
/// <summary>
/// CheckFormControls
/// </summary>
public class TCheckFormControls
{
public const string SELECT_ITEM="Please select a item in \"{0}\".";
public const string COULD_NOT_EMPTY="\"{0}\" could not be empty, please check it.";
public const string ERROR_IN_CONVERT="'{0}' couldn't be convert to {1}, please check your input in \"{2}\".";
public const string ERROR_INPUT="It only can be input {0}, please check your input in \"{1}\"";
private static bool ParseTypeValue(object tag, out TKhyhDataType ofDataType, out string sDataType, out bool bNeedData)
{
if(tag==null)
{
ofDataType=TKhyhDataType.Unknow;
sDataType=ofDataType.ToString();
bNeedData=false;
return false;
}
int ofTypeValue;
try
{
ofTypeValue=Convert.ToInt32(tag.ToString());
bNeedData=((ofTypeValue%10)==1);
ofTypeValue=(ofTypeValue-(ofTypeValue%10))/10;
ofDataType=(TKhyhDataType)System.Enum.Parse(typeof(TKhyhDataType),ofTypeValue.ToString());
sDataType=ofDataType.ToString();
}
catch
{
ofDataType=TKhyhDataType.Unknow;
sDataType=ofDataType.ToString();
bNeedData=false;
return false;
}
return true;
}
/// <summary>
/// CheckForm_Data
/// </summary>
/// <param name="parentSender"></param>
/// It check control sort by control's TabIndex
/// Data Type is by control's Tag
/// Control's name is read from controls' AccessibleDescription
public static void CheckForm_Data(Control parentSender)
{
Control obj, obj2;
TKhyhDataType ofDataType;
bool bNeedData;
string objName;
string sDataType;
ArrayList arrList=new ArrayList();
int idx;
for(int i=0; i<parentSender.Controls.Count; i++)
{
obj=parentSender.Controls[i];
idx=arrList.Count;
for(int j=0; j<arrList.Count; j++)
{
obj2=(Control)arrList[j];
if(obj.TabIndex<obj2.TabIndex)
{
idx=j;
break;
}
}
arrList.Insert(idx,obj);
}
for(int i=0; i<arrList.Count; i++)
{
obj=(Control)arrList[i];
if(obj is Panel)
{
CheckForm_Data(obj);
continue;
}
if(!ParseTypeValue(obj.Tag,out ofDataType, out sDataType, out bNeedData))
continue;
if(obj.Tag==null)
continue;
//MessageBox.Show(obj.Name.ToString());
//continue;
if(obj.AccessibleDescription==null)
objName="";
else
objName=obj.AccessibleDescription.ToString();
if(objName.Length==0)
objName=obj.Name;
if (obj is ListBox)
{
ListBox lstObj=obj as ListBox;
if(bNeedData && lstObj.SelectedItems.Count==0)
{
//lstObj.BackColor=Color.Red;
throw new Exception(string.Format(SELECT_ITEM,objName));
}
}
else if(obj is ComboBox)
{
ComboBox lstObj=obj as ComboBox;
if(bNeedData && lstObj.SelectedItem==null)
{
//lstObj.BackColor=Color.Red;
throw new Exception(string.Format(SELECT_ITEM,objName));
}
}
else if(obj is TextBox)
{
TextBox textObj=obj as TextBox;
string v=textObj.Text;
if(v.Length==0)
{
if(bNeedData)
throw new Exception(string.Format(COULD_NOT_EMPTY,objName));
else
continue;
}
switch(ofDataType)
{
case TKhyhDataType.Integer:
try
{
Convert.ToInt32(v);
}
catch
{
throw new Exception(string.Format(ERROR_IN_CONVERT,v,sDataType,objName));
}
break;
case TKhyhDataType.Float:
try
{
Convert.ToDouble(v);
}
catch
{
throw new Exception(string.Format(ERROR_IN_CONVERT,v,sDataType,objName));
}
break;
case TKhyhDataType.String:
break;
case TKhyhDataType.Date:
case TKhyhDataType.DateTime:
case TKhyhDataType.Time:
try
{
Convert.ToDateTime(v);
}
catch
{
throw new Exception(string.Format(ERROR_IN_CONVERT,v,sDataType,objName));
}
break;
case TKhyhDataType.Number:
try
{
Convert.ToInt32(v);
}
catch
{
throw new Exception(string.Format(ERROR_INPUT,sDataType,objName));
}
break;
default:
break;
}
}
}
}
}
}