I am trying to insert a row in Gridview by using a button and text box outside of the Gridview, and it is working fine. But whenever I am inserting the row, insert form of Gridview is appearing. How to disable this form?
my button:
protected void btnAdd_Click(object sender, EventArgs e)
{
MenuAssignmentGv.AddNewRow();
}
my datasource
<asp:SqlDataSource ID="AttdMenuAssignmentDs" runat="server" ConnectionString='<%$ ConnectionStrings:ConnectionString %>' ProviderName='<%$ ConnectionStrings:ConnectionString.ProviderName %>'
SelectCommand="select mra.RoleAssignmentID, mra.MenuRoleID , mr.MenuRole, mn.MenuName, mn.MenuUrl
from ATTD_MST_MENU mn
inner join ATTD_MST_MENU_ROLE_ASSIGNMENT mra
on mn.MenuID=mra.MenuID
inner join ATTD_MST_MENU_ROLE mr
on mra.MenuRoleID=mr.MenuRoleID
where mra.MenuRoleID=#MenuRoleID"
InsertCommand="INSERT INTO ATTD_MST_MENU_ROLE_ASSIGNMENT(MenuRoleID, MenuID) VALUES (#MenuRoleID, #MenuID)"
<InsertParameters>
<asp:ControlParameter ControlID="ddlRole" PropertyName="Value" Name="MenuRoleID" />
<asp:ControlParameter ControlID="ddlMenu" PropertyName="Value" Name="MenuID" />
</InsertParameters>
<SelectParameters>
<asp:ControlParameter ControlID="ddlRole" PropertyName="Value" Name="MenuRoleID"></asp:ControlParameter>
</SelectParameters>
</asp:SqlDataSource>
whenever i click the button the form always appear, and then the record inserted after I click Update of that form.form appear when inserting new row by clicking button
The ASPxGridView.AddNewRow method does exactly what it should do according to the documentation:
The AddNewRow method switches the ASPxGridView to edit mode and allows
the values of the new row to be edited.
Your task is different - you want to add the new row to the database and make it visible in the ASPxGridView. If you insert a new row to the database before the ASPxGridView.DataBind method is called, the new row will become visible in the ASPxGridView automatically. Alternatively, you can continue using the ASPxGridView API according to the documentation:
To add the new record to the underlying datasource, call the
UpdateEdit method. To initialize row values in code, handle the
InitNewRow event.
I'm trying to do a messaging system where the inbox is a gridview of all the messages associated with a user's ID. I have a global get method in C# to get the user currently signed in. I'm wondering how to tie this back so that the database only shows the data I want it to.
In my .aspx.cs file, I have something like:
protected void Page_Load(object sender, EventArgs e)
{
int userInSess = getLoggedInUser();
Session["user"] = user;
}
In the source file, I have something like:
<asp:SqlDataSource ID="ProjectDB" runat="server"
ConnectionString="<%$ ConnectionStrings:ProjectConnectionString %>"
SelectCommand="SELECT [SentByUserName], [Subject], [CreateDate] FROM [Messages] WHERE (ReceivedByUserID = #user) ORDER BY [CreateDate] DESC">
<SelectParameters>
<asp:SessionParameter Name = "user" />
</SelectParameters>
</asp:SqlDataSource>
I know this is wrong but I can't seem to find clear answer on how to exactly do this. Any help would be greatly appreciated.
Thanks
You need to reference the value stored in the session with:
<asp:SessionParameter Name="User" SessionField="user" />
Note the addition of SessionField attribute.
SqlDataSource control only uses Name="User" of the Parameter object to match a #user placeholder in SQL query
I have two cascading dropdown lists I'm attempting to bind to two separate SqlDataSources each.
These dropdownlists exist in a FormView's EditItemTemplate. Inside the EditItemTemplate two sqldatasource controls exist that populate the department and the jobname. The DeptID and the JobID are the primary keys in those tables. This creates the "cascading effect" between departments and jobs. When a department is selected, only the jobs associated with that department appear.
This piece is working properly.
<asp:FormView ID="frmProfile" runat="server" DataSourceID="sqlDSProfile"
DataKeyNames="EUID" style="margin-top: 0px">
<EditItemTemplate>
<asp:DropDownList ID="ddlDepartments" runat="server" Width="135px"
DataSourceID="sqlDSDepartments"
DataTextField="Department"
DataValueField="DeptID" AutoPostBack="True"
SelectedValue='<%# Bind("CurrentDeptID") %>'
AppendDataBoundItems="true" >
<asp:ListItem></asp:ListItem>
</asp:DropDownList>
<asp:DropDownList ID="ddlJobNames" runat="server" Width="185px"
DataSourceID="sqlDSJobs" DataTextField="JobName" DataValueField="JobID"
SelectedValue='<%# Bind("CurrentJobID") %>'
AppendDataBoundItems="true" >
<asp:ListItem></asp:ListItem>
</asp:DropDownList>
<asp:SqlDataSource ID="sqlDSDepartments" runat="server"
ConnectionString="<%$ ConnectionStrings:JobsDB %>"
SelectCommand="SELECT tblDepartments.DeptID,
tblDepartments.Department
FROM tblDepartments" />
<asp:SqlDataSource ID="sqlDSJobs" runat="server"
ConnectionString="<%$ ConnectionStrings:JobsDB %>"
SelectCommand="SELECT tblJobs.JobID, tblJobs.JobName FROM tblJobs
INNER JOIN tblDeptsJobs ON tblDeptsJobs.JobID = tblJobs.JobID
WHERE tblDeptsJobs.DeptID = #DeptID" >
<SelectParameters>
<asp:ControlParameter ControlID="ddlDepartments" Name="DeptID"
PropertyName="SelectedValue" />
</SelectParameters>
</asp:SqlDataSource>
</EditItemTemplate>
</asp:FormView>
Outside the formview the SqlDataSource exists that binds all of the information to the Employee table in an update statement. I'm leaving all of the other information in this SqlDataSource even though it's been omitted from the FormView above.
<asp:SqlDataSource ID="sqlDSProfile" runat="server"
ConnectionString="<%$ ConnectionStrings:JobsDB %>"
SelectCommand="SELECT tblEmployee.EUID,
tblEmployee.DateHired,
tblEmployee.LastName,
tblEmployee.HiredLastName,
tblEmployee.FirstName,
tblEmployee.Role,
tblEmployee.JobGrade,
tblEmployee.CurrentDeptID,
tblDepartments.Department,
tblDepartments.DeptID,
tblEmployee.CurrentJobID,
tblJobs.JobName,
tblJobs.JobID,
tblEmployee.CurrentShift,
tblEmployee.JobDate,
tblEmployee.IsDisplaced,
tblEmployee.EligibilityDate
FROM tblEmployee
LEFT OUTER JOIN tblDepartments ON tblEmployee.CurrentDeptID = tblDepartments.DeptID
EFT OUTER JOIN tblJobs ON tblEmployee.CurrentJobID = tblJobs.JobID
WHERE (tblEmployee.EUID = #EUID)"
UpdateCommand="UPDATE [tblEmployee]
SET [tblEmployee].[DateHired] = #DateHired,
[tblEmployee].[LastName] = #LastName,
[tblEmployee].[HiredLastName] = #HiredLastName,
[tblEmployee].[FirstName] = #FirstName,
[tblEmployee].[Role] = #Role,
[tblEmployee].[JobGrade] = #JobGrade,
[tblEmployee].[CurrentDeptID] = #CurrentDeptID,
[tblEmployee].[CurrentJobID] = #CurrentJobID,
[tblEmployee].[CurrentShift] = #CurrentShift,
[tblEmployee].[JobDate] = #JobDate,
[tblEmployee].[IsDisplaced] = #IsDisplaced,
[tblEmployee].[EligibilityDate] = #EligibilityDate
WHERE [tblEmployee].[EUID] = #EUID"
ProviderName="System.Data.SqlClient">
<SelectParameters>
<asp:SessionParameter Name="EUID" SessionField="sProfileEUID" DbType="String" />
</SelectParameters>
<UpdateParameters>
<asp:Parameter Name="DateHired" DbType="Date" />
<asp:Parameter Name="LastName" DbType="String" />
<asp:Parameter Name="HiredLastName" DbType="String" />
<asp:Parameter Name="FirstName" DbType="String" />
<asp:Parameter Name="Role" DbType="String" />
<asp:Parameter Name="JobGrade" DbType="Byte" />
<asp:Parameter Name="CurrentDeptID" DbType="Int32" />
<asp:Parameter Name="CurrentJobID" DbType="Int32" />
<asp:Parameter Name="CurrentShift" DbType="Int32" />
<asp:Parameter Name="JobDate" DbType="Date" />
<asp:Parameter Name="IsDisplaced" DbType="Boolean"/>
<asp:Parameter Name="EligibilityDate" DbType="Date"/>
<asp:SessionParameter Name="EUID" SessionField="sProfileEUID" DbType="String" />
</UpdateParameters>
</asp:SqlDataSource>
The only pieces I can't figure out how to bind are the Departments and the Jobs. Everything else is working. I've tried using the following code in the DropDownList controls...
SelectedValue='<%# Bind("CurrentDeptID") %>'
SelectedValue='<%# Bind("CurrentJobID") %>'
...but these result in errors.
Summary
When the user clicks edit, I need the values in the two dropdownboxes to pull their selectedvalue from the main sqlDSProfile data source, but I need them to be updatable. I've gotten it to the point where I can update and bind the job that an associate belongs to, but because the dropdownlists cascade, when I attempt to change the department the AutoPostBack breaks the binding between sqlDSProfile - CurrentJobID and ddlJobs.
Update
I added tblEmployee.CurrentDeptID and tblEmployee.CurrentJobID to the select statement, and added Bind() statements to the DropDownList controls.
SelectedValue='<%# Bind("CurrentDeptID") %>'
SelectedValue='<%# Bind("CurrentJobID") %>'
The two DropDownLists are now populated with accurate information pulled from the Employee table, showing the department and job that the employee belongs to.
The two DropDownLists are also populated by the two SqlDataSources inside the FormView, giving me options for changing the department and changing the job.
When I change the Job, it works and the employees job is updated.
When I change the Department, it breaks saying DataBinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.
Close to Done
I removed the data binding from ddlJobs and coded that in the background.
Protected Sub frmProfile_ItemUpdating(sender As Object, e As System.Web.UI.WebControls.FormViewUpdateEventArgs) Handles frmProfile.ItemUpdating
If frmProfile.CurrentMode = FormViewMode.Edit Then
e.NewValues("CurrentJobID") = DirectCast(DirectCast(sender, FormView).FindControl("ddlJobs"), DropDownList).SelectedValue
End If
End Sub
The only piece that's left is building the code for when the ddlDepartments changes.
pseudocode...
' If Item exists in ddlJobs Then
' select item (CurrentJobID)
' else
' select index 0 and make them pick something new
' end if
So Close!
Updated Again
This is the code I've developed to loosely bind this. In the page_load I'm trying to pull the contents of CurrentJobID from sqlDSProfile and check to see if that value exists in ddlJobs. If it does I want to set ddlJobs.SelectedValue = to that CurrentJobID. If it doesn't I want to set the selectedindex to 0 which is a message saying "pick one" or something.
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If frmProfile.CurrentMode = FormViewMode.Edit Then
' Need to determine if the CurrentJobID returned in the select statement
' exists in the ddlJobs dropdownlist. If it does, set that to the
' selectedvalue, if not set it to 0 so the user can select a new job.
Dim ddlJobs As DropDownList = frmProfile.FindControl("ddlJobs")
Dim dvProfile As DataView = sqlDSProfile.Select(DataSourceSelectArguments.Empty)
Dim drvProfile As DataRowView = dvProfile(0)
If ddlJobs.Items.FindByValue(drvProfile("CurrentJobID")) Is DBNull.Value Then
ddlJobs.SelectedIndex = 0
Else
ddlJobs.SelectedValue = drvProfile("CurrentJobID")
End If
End If
End Sub
Its returning a null reference exception on the line where I'm checking for dbnull.value
I had a similar issue and found a very simple resolution, (and in c#). Imagine a database with a table Questions, related to category and subcategory tables (which are also related and constrained). When trying to update existing records asp throws an error. This is the solution that I worked out thanks to the information above from Lucretius et al.
Only databind the parent dropdownlist
Find a way to insert the child dropdown selected value on the update event of the datasource.
As:
protected void odseditquestion_Updating(object sender, ObjectDataSourceMethodEventArgs e)
{
//dynamically assign value from ddlsubcategory to odseditquestion on updating event
//you really should not have to do this
DropDownList ddlsubcategory = (DropDownList)fveditquestion.FindControl("ddlsubcategory");
e.InputParameters["subcatid"] = (ddlsubcategory.SelectedValue);
}
It works on my application. Hope it helps somebody, this one cost me half a day, such is asp!!
The problem can be if tlbEmployee columns in the SqlDSProfile in the update statement and field names used by your controls do not match. Other procedures you've followed are right.
SqlDataSource control expects field names it updates to be similar
with those bound to the controls(fields) inside the DataBound control.
The Solution can be: change all the update Parameters to ControlParameters referencing the right control for each one
Update: Wait, I think the problem is your select statement of the SqlDSProfile should contain: CurrentDeptID and CurrentJobID. Try it:
<asp:SqlDataSource ID="sqlDSProfile" runat="server"
ConnectionString="<%$ ConnectionStrings:JobsDB %>"
SelectCommand="SELECT tblEmployee.EUID,
tblEmployee.DateHired,
tblEmployee.LastName,
tblEmployee.HiredLastName,
tblEmployee.FirstName,
tblEmployee.Role,
tblEmployee.JobGrade,
tblDepartments.Department,
tblJobs.JobName,
tblEmployee.CurrentShift,
tblEmployee.JobDate,
tblEmployee.IsDisplaced,
tblEmployee.EligibilityDate
tblEmployee.CurrentDeptID,
tblEmployee.CurrentJobID
FROM tblEmployee
Advice: Test your code portion by portion.
Try the code without the dropdownlist, Test separately
Add the one drop downlist
Use select * from ... in select queries
Avoid ajax when testing
If you make it
Add portions of code portion after portion
at last use the partial updating (ajax)
I have a working solution now, thanks in part to Nuux and a bunch of online research. The tip about the join statement wasn't relevant, but the tip about including "CurrentJobID" and "CurrentDeptID" in my select query was spot on.
In addition to that I had to rework the controls a little. The two cascading dropdownlists are below. The ddlJobs dropdown list behaves like a normal databound control, but it doesn't have the Bind("CurrentJobID") statement I was trying in my original post.
<asp:DropDownList ID="ddlDepartments" runat="server" Width="185px"
DataSourceID="sqlDSDepartments"
DataTextField="Department"
DataValueField="DeptID"
SelectedValue='<%# Bind("CurrentDeptID") %>'
AppendDataBoundItems="true"
AutoPostBack="True" >
<asp:ListItem Text="--Select One--" Value="" />
</asp:DropDownList>
<asp:DropDownList ID="ddlJobs" runat="server" Width="185px"
DataSourceID="sqlDSJobs"
DataTextField="JobName"
DataValueField="JobID"
AppendDataBoundItems="true"
OnDataBinding="ddlJobs_DataBinding" />
The only thing the custom routine "ddlJobs_DataBinding" is doing is adding "--Select One--" as index 0 in the ddlJobs dropdown. I tried this in several places, like page_load, and the databound event of the formview with no success.
Protected Sub ddlJobs_DataBinding(sender As Object, e As System.EventArgs)
Dim ddlJobs As DropDownList = frmProfile.FindControl("ddlJobs")
Dim liSelectOne As New ListItem("--Select One--", 0)
ddlJobs.Items.Clear()
ddlJobs.Items.Insert(0, liSelectOne)
End Sub
The databound event of the formview frmProfile_DataBound event does do some work though. When the user clicks "edit" on the formview to enter editing mode this ensures that the dropdownlist ddlJobs has the correct job selected by default for the profile in question. If the user hasn't been assigned to a job then it defaults to selectedindex 0 which is "--Select One--" set in custom databinding event just above.
Protected Sub frmProfile_DataBound(sender As Object, e As System.EventArgs) Handles frmProfile.DataBound
If frmProfile.CurrentMode = FormViewMode.Edit Then
Dim ddlJobs As DropDownList = frmProfile.FindControl("ddlJobs")
Dim dvProfile As DataView = sqlDSProfile.Select(DataSourceSelectArguments.Empty)
Dim drProfile As DataRow = dvProfile.Table.Rows(0)
If drProfile("CurrentJobID").ToString() = "" Then
ddlJobs.SelectedIndex = 0
Else
ddlJobs.SelectedValue = drProfile("CurrentJobID").ToString()
End If
End If
End Sub
Finally, if the user selects a new job from ddlJobs, that value has to be fed to the database, which the ItemUpdating event of the formview handles.
Protected Sub frmProfile_ItemUpdating(sender As Object, e As System.Web.UI.WebControls.FormViewUpdateEventArgs) Handles frmProfile.ItemUpdating
If frmProfile.CurrentMode = FormViewMode.Edit Then
Dim ddlJobs As DropDownList = frmProfile.FindControl("ddlJobs")
e.NewValues("CurrentJobID") = ddlJobs.SelectedValue
End If
End Sub
Done!
I have a dropdownlist which is populated with data from an SQL db. This is what I might have in the aspx file. How do I move (as much as possible) the code from the aspx file to the aspx.cs file to implement the code behind technique?
I mean at least the SELECT portion.
Thanks.
<asp:DropDownList ID="DropDownList1" ... runat="server"/>
...
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:Pubs %>"
SelectCommand="SELECT [au_id], [au_lname], [au_fname], [state] FROM [authors] WHERE [state] = #state">
<SelectParameters>
<asp:ControlParameter Name="state" ControlID="DropDownList1" PropertyName="SelectedValue" />
</SelectParameters>
</asp:SqlDataSource>
suppose you are binding a grid with data source SqlDataSource1 then you can catch SelectedIndexChanged event in codebehind and get data to bind the grid like this:
ASPX file:
<asp:DropDownList ID="DropDownList1" runat="server"
OnSelectedIndexChanged="ddlChanged" />
C# (codebehind):
protected void ddlChanged(object sender, EventArgs e)
{
var cs=..;//get connection string
using(var con=new SqlConnection(cs))
{
using(var com=new SqlCommand(con))
{
com.Open();
com.CommandType = CommandType.Text;
com.CommandText="SELECT [au_id], [au_lname], [au_fname], [state]
FROM [authors] WHERE [state] = #state";
var state=....;//GET VALUE OF STATE FROM DROPDOWN
var p = com.Parameters.Add("#state");//set other properties
p.Value = state;
using(var adptr=new SqlDataAdapter(com))
{
var dtb=new DataTable();
adptr.Fill(dtb);
grid.DataSource=dtb;
grid.DataBind();
}
}
}
}
The SelectCommand is a property of the datasource object you are using. These can be applied in the code behind as needed, but you may want to do it in an overridden Init page function as this might be used quite early on in the asp.net page life cycle. for eg, although I'm not sure exactly where.
protected override OnInit(object sender, EventArgs e)
{
dsMySource.SelectCommand = "SELECT [au_id], [au_lname], [au_fname], [state] FROM [authors] WHERE [state] = #state"
}
You are also going to have to make sure the #state parameter is used correctly in the code behind as well, this can be accessed also as a property (dsMySource.SelectParameters).
How can I execute a stored procedure using sqldatasource and get the return value in vb.net.
Thanks,
Terri
The method you are looking for is DataBind. Call it using mySqlDataSource.DataBind()
<asp:SqlDataSource
ID="sds2"
runat="server"
ConnectionString="..."
SelectCommand="spTest"
SelectCommandType="StoredProcedure"
>
<SelectParameters>
<asp:ControlParameter ControlID="TextBox1" PropertyName="Text"
Name="ParamName" Type="Int32" DefaultValue="0" />
</SelectParameters>
</asp:SqlDataSource>
<asp:GridView ID="gv" runat="server" DataSourceID="sds2"></asp:GridView>
The stored procedure is executed when you call DataBind. The DataBind method is called automatically if the DataSourceID property of the GridView control refers to a valid data source control.
You need to use a SqlConnection with a SqlCommand, like this:
using (var connection = new SqlConnection(connectionString))
using (var command = new SqlCommand("StoredProcedureName", connection)) {
command.CommandType = CommandType.StoredProcedure;
command.Parameters.AddWithValue("SomeParam", someValue);
object result = command.ExecuteScalar();
}
If you already have the SP returning a value then you have to grab the value in the corresponding event for the data source. AKA - Inserted, Selected, etc...
Here's a couple links illustrating the point.
http://fredrik.nsquared2.com/viewpost.aspx?PostID=162
http://www.velocityreviews.com/forums/t86158-re-how-to-retrieve-an-output-parameter-using-sqldatasource-control.html
<asp:SqlDataSource ID="ADSqlDataSource" runat="server" ConnectionString="<%$ ConnectionStrings:ADConnection %>"
SelectCommand="GetProfile" SelectCommandType="StoredProcedure">
<SelectParameters>
<asp:ControlParameter ControlID="InputTextBox" Name="Host" PropertyName="Text" Type="String" />
</SelectParameters>
</asp:SqlDataSource>
GetProfile is the stored proc name and Host is parameter name, which is retreived from a texbox called InputTextBox