private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
this.Add();
Response.Write (this.alFieldItems.Count);
}
protected System.Collections.ArrayList alFieldItems = new System.Collections.ArrayList(10); // 10对值 public void AddFieldItem(string _fieldName,object _fieldValue) // object,因为值类型不确定!
{
for(int i=0;i<alFieldItems.Count;i++)
{
if(((DbKeyItem)this.alFieldItems[i]).fieldName == _fieldName)
{
throw new ArgumentException("The field name has existed!");
}
this.alFieldItems.Add(new DbKeyItem(_fieldName,_fieldValue));
Response.Write (this.alFieldItems.Count);
}
}
public void Add()
{
this.AddFieldItem("userName","xlingfeng");
} public class DbKeyItem
{
/// <summary>
/// 字段名称
/// </summary>
public string fieldName;
/// <summary>
/// 字段值
/// </summary>
public string fieldValue;
/// <summary>
/// 类的构造函数
/// <para name="_fieldName">字段名称。</para>
/// <para name="_fieldValue">字段值。</para>
/// </summary>
public DbKeyItem(string _fieldName,object _fieldValue)
{
this.fieldName = _fieldName;
this.fieldValue = _fieldValue.ToString();
}
}----------预期实现效果
将 字段和字段值放入 数组中待以后处理 为何 Count的值认为 0 呢??
{
// 在此处放置用户代码以初始化页面
this.Add();
Response.Write (this.alFieldItems.Count);
}
protected System.Collections.ArrayList alFieldItems = new System.Collections.ArrayList(10); // 10对值 public void AddFieldItem(string _fieldName,object _fieldValue) // object,因为值类型不确定!
{
for(int i=0;i<alFieldItems.Count;i++)
{
if(((DbKeyItem)this.alFieldItems[i]).fieldName == _fieldName)
{
throw new ArgumentException("The field name has existed!");
}
this.alFieldItems.Add(new DbKeyItem(_fieldName,_fieldValue));
Response.Write (this.alFieldItems.Count);
}
}
public void Add()
{
this.AddFieldItem("userName","xlingfeng");
} public class DbKeyItem
{
/// <summary>
/// 字段名称
/// </summary>
public string fieldName;
/// <summary>
/// 字段值
/// </summary>
public string fieldValue;
/// <summary>
/// 类的构造函数
/// <para name="_fieldName">字段名称。</para>
/// <para name="_fieldValue">字段值。</para>
/// </summary>
public DbKeyItem(string _fieldName,object _fieldValue)
{
this.fieldName = _fieldName;
this.fieldValue = _fieldValue.ToString();
}
}----------预期实现效果
将 字段和字段值放入 数组中待以后处理 为何 Count的值认为 0 呢??
Response.Write (this.alFieldItems.Count); // 输出结果为0
public void AddFieldItem(string _fieldName,object _fieldValue) // object,因为值类型不确定!
{
bool isFieldExisted = false;
for(int i=0;i<alFieldItems.Count;i++)
{
if(((DbKeyItem)this.alFieldItems[i]).fieldName == _fieldName)
{
throw new ArgumentException("The field name has existed!");
isFieldExisted = true;
break;
}
}
if(isFieldExisted == false)
{
this.alFieldItems.Add(new DbKeyItem(_fieldName,_fieldValue));
}
Response.Write (this.alFieldItems.Count);
}