Web Forms :: Checkbox List Selection From Database
Apr 27, 2016
I have Checkbox list from database and selection list also from database . i can fill check boxlist from db in below . i have one datatable for selection items .i want that values to be selected in this checklist.
dt pagelist have 1 to 10
dt checklist have 1,3,5,7
DataTable dt = obj.checklist();
public void pagelist() {
DataTable pl = obj.pagelist();
foreach (DataRow row in pl.Rows) {
ListItem item = new ListItem();
item.Text = row["Previlage_pageName"].ToString();
item.Value = row["Previliges_ID"].ToString();
CHpagelist.Items.Add(item);
}
}
I am trying to use linq to unselect the last selection if the user exceeds a particular selection. Assume you have a max set to 2. Now once the user reaches that I would like to uncheck the last one the user selected after this. I wrote something like this -
I would like to alter the query that is run, depending on the selection made by the user in a drop down list on the same page. Would this best be done using a partial page update (AJAX)? Ideally it would be great to have the textbox result change quickly once the drop-down list value has changed, without a full page postback. I would like to change the SQL query to a completely different query if the user selects an option different to the default (page_load value) in the drop-down list. I would then like the newly retrieved result to be displayed in the textbox as before.
My problem is this "I have all the tools, VS 2005, 2008, 2010. I have every book, I have SQL server 2005 and 2008" I have all the tools, but I do not know what tool or technology to use when starting out learning all this. I juat do not know what book teaches what I need to do for something like below.
Here is my question:
I created an .ASPX webform that is to "Submit" to a SQL 2005 database. I gave this form to my DBA, and he has made up a Data Model. Now I have to figure out how to write the ASP.NET code so it will submit to the DB. My first issue is not knowing this:
1. "How do I loop through my CheckBox List", and then insert the values checked into a "Database Table" (Each Checkbox value MUST be a seperate row in the table, the DBA does not want a seperate column for each checkbox value)
2. The database is using stored procedures
3. My third issue is this: "I do not know "where" to put the "code". If you do resond to this,
Summary: I just need shown the code on how to "loop through" the CheckBox List on my form, and insert those values into a database table as seperate rows.
In the user form, the user has a chekboxList, and he can select more than one item.
how can I store those selected items in database, and how then I can retrieve them. " Is it true to make a separate column for each item, and then if selected, then that cloumn will have "1" and "0" for non selected. " Only that idea occurred to my mind, and I think that I can find better it.
i use this to select one checkbox to isselected column how i convert this to multi checkboxlist to single column i use many ways more than 3 days without success
private void BindCheckBoxList() { DataTable dt = new DataTable(); SqlConnection connection = new SqlConnection(GetConnectionString()); try { connection.Open(); string sqlStatement = "SELECT * FROM boby"; SqlCommand sqlCmd = new SqlCommand(sqlStatement, connection); SqlDataAdapter sqlDa = new SqlDataAdapter(sqlCmd); sqlDa.Fill(dt); if (dt.Rows.Count > 0) { CheckBoxList1.RepeatColumns = 4; // set the number of columns in the CheckBoxList CheckBoxList1.DataSource = dt; CheckBoxList1.DataTextField = "Name"; // the items to be displayed in the list items CheckBoxList1.DataValueField = "Name"; // the id of the items displayed CheckBoxList1.DataBind(); //Setting the Selected Items in the ChecBoxList based from the value in the database //to do this, lets iterate to each items in the list for (int i = 0; i < dt.Rows.Count; i++) { if (!string.IsNullOrEmpty(dt.Rows[i]["IsSelected"].ToString())) { CheckBoxList1.Items[i].Selected = Convert.ToBoolean(dt.Rows[i]["IsSelected"]); } } } } catch (System.Data.SqlClient.SqlException ex) { string msg = "Fetch Error:"; msg += ex.Message; throw new Exception(msg); } finally { connection.Close(); } } private void Update(string name, bool isSelected) { SqlConnection connection = new SqlConnection(GetConnectionString()); SqlCommand cmd; string sqlStatement = string.Empty; try { connection.Open(); sqlStatement = "UPDATE handymen SET IsSelected = @IsSelected WHERE Name = @BizName"; cmd = new SqlCommand(sqlStatement, connection); cmd.Parameters.AddWithValue("@Name", name); cmd.Parameters.AddWithValue("@IsSelected", isSelected); cmd.CommandType = CommandType.Text; cmd.ExecuteNonQuery(); } catch (System.Data.SqlClient.SqlException ex) { string msg = "Insert/Update error"; msg += ex.Message; throw new Exception(msg); } finally { connection.Close(); } } protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { BindCheckBoxList(); } } protected void Button1_Click(object sender, EventArgs e) { string str = string.Empty; for (int i = 0; i < CheckBoxList1.Items.Count; i++) { if (CheckBoxList1.Items[i].Selected) { str = CheckBoxList1.Items[i].Text; Update(str, CheckBoxList1.Items[i].Selected); } } //ReBind the List to retain the selected items on postbacks BindCheckBoxList(); }
Looping Through Checkbox List and adding selected items to MS SQL DatabaseI don't want to store it using comma deliminator.I will need to do a search on analyze which users have what music in common.The image above is from a tbl_lookup_music table I created. MusicID, MusicNow how should I build the logicIF we have a user that has a tbl_profile table. And listens to many different types of music. How should We store the data.------------------------------------------------------------------------------------------CREATE TABLE [dbo].[tbl_lookup_music]( [MusicID] [int] IDENTITY(1,1) NOT NULL, [Music] [nvarchar](64) NOT NULL, ---- Type of music. CONSTRAINT [PK_tbl_lookup_music] PRIMARY KEY CLUSTERED ( [MusicID] ASC )WITH(PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF,ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] ) ON [PRIMARY----------------------------------------------------------------------------------------------CREATE TABLE [dbo].[tbl_Profile_Music]( [ProfileMusicID] [int] IDENTITY(1,1) NOT NULL, [ProfileID] [int] NOT NULL, [MusicID] [int] NOT NULL,PRIMARY KEY CLUSTERED ( [ProfileMusicID] ASC)WITH(PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF,ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]) ON [PRIMARY]GOHow should I setup this table.
I am absoluetly confused. My web app has a checkbox list that my code is looking to see if the user checked it. Like I said, very simple stuff... Here's the code:
If (chkLaunch.Items(1).Selected) Then Launch = 1 End If
The odd thing is that when it gets to this bit of code it just moves right past it like it wasn't checked. The same thing happens when I use a single checkbox (rather than a checkbox list). I've tried a bunch of different ways to make the code work but I'm left to the conclusion that I'm just not telling it to do this correctly. Either that or my project is messed up somehow.I say that my project is messed up because when I add an object to the page in Design mode, it doesn't write the source code. So when I save and close, all the modifications are mysteriously gone. This happens on multiple PC's...So, is the checkbox problem just me not doing something correctly or is my web project messed up?
I am binding a checkboxlist with a dataset (with these columns : id,empname,resourceId,balanceId as columns) with datavaluefield as id and datatextfield as empname;
Now, i want to control the selection of the items. Say some thing like
1. "User should be allowed to check only say 5 items with same resourceId" using javascript
2. And in total he should select only 20 items (max 5 items for same resource id and max 15 items for the remaining)
I have one gridview with two template fields check box and dropdown and my doubt is dropdown validation should occur only for check box selected items..
In my form all the dropdown shows validation even though if check box is not selected
Using checkboxes, can the row of record(s) be inserted into a database? I am populating a Gridview. Done. A checkbox field has been added, when the user selects one or more rows, a submit button (which is not working) needs to inserting those records into a table. The insert statment will work outside of the page but is not working using the scenario I jut described. Is this task as I have outlined doable?
In VB.net .... I have GridView from which i select list of rows using check box and upon clicking the button i need to display those selected rows in a gridView of another page. and that page is a popup window?
I have to select checkboxes besed on group column values. If you see below gridview, column 3 (GroupN) has 1,1,1,1,2,2,2,2....etc (this column data is not static, will change based on page index. i.e PageIndex =2 may starts with 7,7,7,8,8,8,8,8,9,9,9 etc).
Now My question is.
1). If user selected '1', we have to store value and user must and should select another '1' (atleast two times).
2) If user selected '1', and user trying select '2'. Giving error says "Must have select one then one record in group to combine' (will not allow) and unselect '2'.
3) If user selected '1' atleast two times, and user trying select '2'. Will allow.
4) If user selected '1' atleast two times and selected '2' one time, trying to select '3'. will not allow user to select '3'.
I have two Listboxes side by side. First Listbox lists all employee. I have a button to move selected employee from Listbox 1 to Listbox 2. If i select multiple employee from ListBox 1 and click on a button to move to selected employee to ListBox 2, then only alternate selection is moved.
multiple selection drop down list for asp .net[ vs-2008] and its works in content page. most of the examples are not working in content page... i wanna implement in content page of master page.
create multiselection Dropdownlist in asp.net 2.0 (I don't want use ajax or any other control) i need pure asp.net 2.0 program and c#.netValues are populated in DDL from Shared file location not from data base.After selecting the value in DDL (i e more than one value) based on the search condition it should display the value
I need getting a drop down list selection to populate a calendar. The user selects a vehicle from the dropdownlist and based on that selection, the calendar needs to populate a link with drivers names on whatever days the vehicle is rented out for.
I have a drop down list that has the initials of about 12 of our sales guys.How can I make it so that when they select their initials from the list, the next drop down list only shows their customers.In my database there is a column for customer name and salesman.
I have a databound grid with a templated field column that is a checkbox. When the user checks the checkbox, it will autopostback and update the row to indicate the box's check state.
My first attempt was to simply use the OnCheckedChanged method, but when this gets called, I have no way to know which row the checkbox came from. Thus, I don't know which row to update.
Can anyone suggest a method to determine which row the checkbox that fired the oncheckedchanged event came from? Or can you suggest a better way to achieve what I need to do?
I cannot bind the checkbox to the data column because I do not want the checkbox disabled in select mode, and do not wish to require the user to enter edit mode to change the value. I also need all rows to be editable. So, the best route seems to be in a templated column.
