问题描述
其实我发现， chkContactType.Items 是空的，当我通过代码。我甚至增加了一个手表 chkContactType.Items.Count ，这是从来没有什么，但0我severly困惑，现在，因为它显然不是我的插入法正常工作而使用这些相同的箱子，并插入值的成员为每个项目....
我有一些检查，我需要设置根据项目价值CheckState因为这是被存储在数据库中的已经存在的记录列表框控件。不幸的是，我只看到的方式由未存储索引设置此。该指数是本地的控制，使得，例如，控制ContactType中有15个项目。指数是0-14。项目值分别为39,40,41,42,43,44,45,46,47,48,49,50,2077,2078,2079。我无论怎样才能获得与value成员值的索引值或设定值的成员值返回的每个项目的checkstate？
感谢
私人无效PaintDetails（GUID cNoteID）
{
VAR cNoteDetailDT = CurrentCaseNote.GetCNoteDetail（cNoteID）;
LoadCaseNoteDetailData（cNoteDetailDT.Rows [0]）;
//装载联系人类型数据本CaseNote
// contactTypeDT返回使用（VAR contactTypeDT进行检查此GUID
的CHK项目
// itemid的= CurrentCaseNote.GetCNoteContactType（cNoteID））
{
如果（contactTypeDT.Rows.Count大于0）
的foreach（DataRow的行contactTypeDT.Rows）
{
LoadContactTypeData （行）;
}
}
}
私人无效LoadContactTypeData（DataRow的行）
{
//这不起作用
变种theItem =行[项目编号]的ToString（）。
//的ItemIndex最终总是设置为-1
变种的ItemIndex = chkContactType.Items.IndexOf（theItem）;
chkContactType.SetItemChecked（（INT）的ItemIndex，真正的）;
//这工作我只需要提供正确的索引
chkContactType.SetItemChecked（0，真正的）;
}
编辑回应置评
这是我如何填充列表框选中。我知道有一个幻数在那里。我正在做。它涉及到在类别ID的ContactType数据库。
//联系类型选中列表框
chkContactType.DataSource = CurrentCaseNote.GetMaintItems（1）;
chkContactType.DisplayMember =ItemDescription;
chkContactType.ValueMember =项目编号;
然后CurrentCaseNote BLL（有点） - >
公共静态数据表GetMaintItems（INT ICAT）
{
&IQueryable的LT; tblCaseNotesMaintItem> tItems = CaseNoteDAL.GetCNTable（）;
回报率（tItems.Where（项目=> item.CategoryID == ICAT&安培; item.IsActive）.OrderBy（
项= GT; item.OrderID）。选择（项目=>新建{ item.ItemID，item.ItemDescription}））CopyLinqToDataTable（）。
}
和最后的DAL - >
公共静态表< tblCaseNotesMaintItem> GetCNTable（）
{
返回dcCaseNotes.GetTable< tblCaseNotesMaintItem>（）;
}
编辑2
这是我的代码现在看起来像，但仍然没有去。它就像是从来没有填充ItemCount中....
//装载联系类型数据使用此CaseNote
（变种contactTypeDT = CurrentCaseNote.GetCNoteContactType（cNoteID））
{
如果（contactTypeDT.Rows.Count大于0）
的foreach（DataRow的行中contactTypeDT.Rows）
{
LoadContactTypeData（行）;
}
}
}
私人无效LoadContactTypeData（DataRow的行）
{
//这不起作用
变种theItem =行[项目编号];
的for（int i = 0; I< chkContactType.ItemCount;我++）
{
如果（theItem == chkContactType.GetItemValue（I））
chkContactType .SetItemChecked（我，真）;
}
}
这似乎工作：
INT指数= checkedListBox1.Items.IndexOf（42）;
checkedListBox1.SetItemChecked（指数，真正的）;
I am actually finding that chkContactType.Items is empty when I step through the code. I even added a Watch to chkContactType.Items.Count and it is never anything but 0. I am severly confused now as it obviously isn't as my Insert method works fine which uses these same boxes and inserts the Value Member for each item....
I have some checked list box controls that I need to set the CheckState based on the item value as that is what is stored in the DB for an exsiting record. Unfortunately, I only see a way to set this by index which is not stored. The index is local to the control so, for example, control ContactType has 15 items in it. Index is 0-14. Item Value is 39,40,41,42,43,44,45,46,47,48,49,50,2077,2078,2079 respectively. How can I either get the index value with the Value Member value OR set the checkstate of each returned item with the Value Member value?
Thanks
private void PaintDetails(Guid cNoteID)
{
var cNoteDetailDT = CurrentCaseNote.GetCNoteDetail(cNoteID);
LoadCaseNoteDetailData(cNoteDetailDT.Rows[0]);
// Load Contact Type Data for this CaseNote
// contactTypeDT returns ItemID of chk items
// that were checked for this Guid
using (var contactTypeDT = CurrentCaseNote.GetCNoteContactType(cNoteID))
{
if (contactTypeDT.Rows.Count > 0)
foreach (DataRow row in contactTypeDT.Rows)
{
LoadContactTypeData(row);
}
}
}
private void LoadContactTypeData(DataRow row)
{
// This does not work
var theItem = row["ItemID"].ToString();
// itemIndex always ends up set to -1
var itemIndex = chkContactType.Items.IndexOf(theItem);
chkContactType.SetItemChecked((int) itemIndex, true);
// This works I just need to supply the correct index
chkContactType.SetItemChecked(0,true);
}
EDIT in response to comment
This is how I populate the Checked ListBox. I know there is a "magic number" there. I am working on it. It relates to the CategoryID in the DB of ContactType.
// Contact Type Check List Box
chkContactType.DataSource = CurrentCaseNote.GetMaintItems(1);
chkContactType.DisplayMember = "ItemDescription";
chkContactType.ValueMember = "ItemID";
and then CurrentCaseNote BLL(kinda)-->
public static DataTable GetMaintItems(int iCat)
{
IQueryable<tblCaseNotesMaintItem> tItems = CaseNoteDAL.GetCNTable();
return (tItems.Where(item => item.CategoryID == iCat & item.IsActive).OrderBy(
item => item.OrderID).Select(item => new {item.ItemID, item.ItemDescription})).CopyLinqToDataTable();
}
and finally the DAL -->
public static Table<tblCaseNotesMaintItem> GetCNTable()
{
return dcCaseNotes.GetTable<tblCaseNotesMaintItem>();
}
EDIT 2
This is what my code NOW looks like but still no go. It is like ItemCount is never populated....
// Load Contact Type Data for this CaseNote
using (var contactTypeDT = CurrentCaseNote.GetCNoteContactType(cNoteID))
{
if (contactTypeDT.Rows.Count > 0)
foreach (DataRow row in contactTypeDT.Rows)
{
LoadContactTypeData(row);
}
}
}
private void LoadContactTypeData(DataRow row)
{
// This does not work
var theItem = row["ItemID"];
for (int i = 0; i < chkContactType.ItemCount; i++)
{
if(theItem == chkContactType.GetItemValue(i))
chkContactType.SetItemChecked(i,true);
}
}
This seems to work:
int index = checkedListBox1.Items.IndexOf("42");
checkedListBox1.SetItemChecked(index, true);
这篇关于获取与价值指数在经过列表框的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！