checkedlistbox

问题 I have a CheckedListBox. I would like to be able to select items when I click on the text but check/uncheck them when I click on the checkbox area on the left. If I set CheckOnClick then the items are checked and unchecked whenever I click, even on the text, so that's no good. But if I clear CheckOnClick then I have to click twice to check and uncheck. My first thought is to handle MouseClick or MouseDown events and call IndexFromPoint to find out which row is clicked. Then I would just guess

问题 I have a CheckedListBox previously populated. I want to loop with a "for each / next" through all items in the CheckedListBox and do a lot of "stuff" with each iteration element of the checkedlistbox. example code: For Each item In CheckedListBox1.Items If item.Checked = True Then 'do stuff like item.BackColor = Color.Blue Else 'do other stuff item.BackColor = Color.Brown End If Next the problem is that is an 'Object' type and not a 'Control' type. If I force the iteration var As CheckBox, it

问题 I've got this code to try to extract the display value from a CheckedListBox: CheckedListBox.CheckedItemCollection selectedUnits = checkedListBoxUnits.CheckedItems; _selectedUnit = selectedUnits[0].ToString(); ...but it doesn't work - the value of "_selectedUnit", instead of being " platypus " as it should be, is " System.Data.DataRowView ". How can I coax the string value out of this complex object? UPDATE I'm not sure just what user2946329 wants to see bzg. my CheckedListBox, but here is

问题 I have a list box and i am trying to get currently checked item inside ItemCheck Handler , but i couldn't , ->I can get List of CheckedItems using property chckdLstBox_Metabolites.CheckedItems But how do i get the item that is checked just before???? 回答1: You can use the event's ItemCheckEventArgs: private void checkedListBox1_ItemCheck(object sender, ItemCheckEventArgs e) { //Note: MessageBox is for demo use only MessageBox.Show("Selected Index: " + e.Index.ToString()); MessageBox.Show(

问题 We have a custom implementation of a multi-select checkbox in our VB.NET application. It largely works just fine, but we recently replaced a regular single-select combobox with this control, and it does not support searching while typing. For example, if the user wants to get to "zygote" they used to be able to start typing the word, and it would slowly get closer. Now, as you type, it jumps to the z's, then the y's, then the g's, and so on. Is it possible to make it behave as it did with a

问题 I've started learning Powershell and am now stuck after spending several hours on a problem I can find solutions for in multiple languages except Powershell. I need to place a check against each item in a CheckedListBox that matches any of the values in a semi-colon delimited string named $MLBSVar_SelectedPackages . (eg. $MLBSVar_SelectedPackages = 'packageA;packageB;packageC;' ) and so on. I've come up with this line but it doesn't yet work. Please can you help me? if ($MLBSVar

问题 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

问题 Requirement I want to select values from an enum in C# using a ComboBox or select bitmasks (for enum s with the Flags attribute) with a CheckedListBox . I want a way to add the values to the controls as selectable items, and cleanly tell which the user has selected. Objective 1: User-friendly I also want the selection to be clear and pretty to the user. Currently I can already add Enum values to a ComboBox or a CheckedListBox , but Enum.ToString() will return the identifier name. Pascal Case

问题 How can I create an array containing the checked items in a checkedlistbox using foreach loop (or any other way)? I can't know the number of items in the list. 回答1: Assuming your using 3.5 or above.. object[] items = lb.CheckedItems.OfType<object>().ToArray(); And if you are adding a specific type of object to the CheckedListBox then you can replace object with the name of the class you use. 回答2: Hi i am doing a similar kind of task . But instead of array i am using array list . I used the

问题 I am developing a Winform and I need a checkedlistbox. I have the values stored in an object which has a List property: public static class Fields { public static IList<string> FieldList { get; set; } static Fields() { ...//populate FieldList } } Now I would like my CheckedListBox to use Fields.FieldList as datasource. After searching online I found I needed to set //in myForm_Load mycheckedListBox.DataSource = Fields.FieldList; But myCheckedListBox does not have a DataSource property. Am I