Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
If Not IsPostBack Then
TextBox3.Text = Now()
Dim com As New SqlCommand
com.CommandType = CommandType.Text
com.CommandText = "select productname ,productid,productdescreption,price from products order by productname "
com.Connection = con
Dim ad As New SqlDataAdapter
Dim ds As New DataSet
ad.SelectCommand = com
ad.Fill(ds)
DropDownList1.DataSource = ds
DropDownList1.DataTextField = "productname"
DropDownList1.DataValueField = "productid"
'Dim ss As Integer
'ss = Convert.ToInt32(DropDownList1.DataValueField)
'DropDownList1.DataValueField = ss
DropDownList1.DataBind()
Dim com2 As New SqlCommand
com2.CommandType = CommandType.Text
com2.CommandText = "select dealername ,dealerid from dealerin order by dealername "
com2.Connection = con
Dim ad2 As New SqlDataAdapter
Dim ds2 As New DataSet
ad2.SelectCommand = com2
ad2.Fill(ds2)
DropDownList2.DataSource = ds2
DropDownList2.DataTextField = "dealername"
DropDownList2.DataValueField = "dealerid"
DropDownList2.DataBind()
'Dim com3 As New SqlCommand
'com3.CommandType = CommandType.Text
'com3.CommandText = "select distinct productname ,productid,productdescreption from products "
'com3.Connection = con
'Dim ad3 As New SqlDataAdapter
'Dim ds3 As New DataSet
'ad2.SelectCommand = com3
'ad2.Fill(ds3)
'DropDownList3.DataSource = ds3
'DropDownList3.DataTextField = "productdescreption"
'DropDownList3.DataValueField = "productid"
'DropDownList3.DataBind()
End If
End Sub
Dim dss As New DataSet
Public Function getproduct_byid(ByVal productid As Integer) As DataSet
Try
Dim com3 As New SqlCommand
com3.CommandType = CommandType.StoredProcedure
com3.CommandText = "getproduct_byid"
com3.Connection = con
'com.Parameters.AddWithValue("#productid", productid)
Dim adapter3 As New SqlDataAdapter(com3)
adapter3.Fill(dss, "product")
Return dss
Catch ex As Exception
Response.Write("error due to " & ex.Message)
End Try
End Function
Protected Sub DropDownList1_SelectedIndexChanged(sender As Object, e As EventArgs) Handles DropDownList1.SelectedIndexChanged
Try
getproduct_byid(DropDownList1.SelectedValue)
If dss.Tables("product").Rows.Count = 1 Then
TextBox5.Text = dss.Tables("product").Rows(0).Item("price")
End If
Catch ex As Exception
Response.Write("error due to " & ex.Message)
End Try
End Sub
Protected Sub TextBox5_TextChanged(sender As Object, e As EventArgs) Handles TextBox5.TextChanged
Try
Dim a As Double
Dim b As Double
a = TextBox4.Text
b = TextBox5.Text
TextBox6.Text = A * b
Catch ex As Exception
Response.Write("error due to " & ex.Message)
End Try
End Sub
It might be your datatable contain more than 1 row ..
Change this
If dss.Tables("product").Rows.Count = 1 Then
To
If dss.Tables("product").Rows.Count > 0 Then
Related
This is my final-year mini-project. I tried to implement a shopping cart project.
But I get an error in filling details on gridview. I tried the below coding:
If Not IsPostBack Then
Dim dt As DataTable = New DataTable()
Dim dr As DataRow
dt.Columns.Add("sno")
dt.Columns.Add("productid")
dt.Columns.Add("productname")
dt.Columns.Add("price")
dt.Columns.Add("productimage")
dt.Columns.Add("cost")
dt.Columns.Add("totalcost")
If Request.QueryString("id") IsNot Nothing Then
If Session("Buyitems") Is Nothing Then
dr = dt.NewRow()
Dim mycon As String = "Data Source=Sandy-PC\SQLEXPRESS;Initial Catalog=master;Integrated Security=True"
Dim scon As SqlConnection = New SqlConnection(mycon)
Dim myquery As String = "select * from decorativestands where Id=" & Request.QueryString("id")
Dim cmd As SqlCommand = New SqlCommand()
cmd.CommandText = myquery
cmd.Connection = scon
Dim da As SqlDataAdapter = New SqlDataAdapter()
da.SelectCommand = cmd
Dim ds As DataSet = New DataSet()
da.Fill(ds)
dr("sno") = 1
dr("productid") = ds.Tables(0).Rows(0)("productid").ToString()
dr("productname") = ds.Tables(0).Rows(0)("productname").ToString()
dr("productimage") = ds.Tables(0).Rows(0)("productimage").ToString()
dr("price") = ds.Tables(0).Rows(0)("price").ToString()
dt.Rows.Add(dr)
GridView1.DataSource = dt
GridView1.DataBind()
Session("buyitems") = dt
Else
dt = CType(Session("buyitems"), DataTable)
Dim sr As Integer
sr = dt.Rows.Count
dr = dt.NewRow()
I got "sqlexception was unhandled by user code" error.
I am working on a cart/basket page of an e-commerce site. Specifically: "-" link button to decrease quantity of selected product by 1 in the cart, and later the "+" link button to increase quantity of selected product by 1 in the cart.
For the "-" button I am doing:
Check the CategoryID of the product selected.
If the CategoryID = 3 or 4, then:
Check if the quantity of the selected product is more > 1.
Quantity = Quantity - 1.
Reduce the amount of HoursWork (used for booking slot length) for the selected product.
Product Stock + 1.
Reduce the weight (used for delivery price).
Else: label displays "Quantity cannot be changed for Detailing & Valeting services.
I am using a SqlDataReader to get the CategoryID, and then storing it as Integer in variable CategoryID.
I tested by displaying the variable contents in a label, and it collects the correct CategoryID - however the "If CategoryID = "3" or "4" Then... is not working, as all categoryIDs are running the IF section or the statement and not the ELSE section.
Protected Sub lDecrease_Click(ByVal sender As Object, ByVal e As EventArgs)
'get clicked button
Dim lnk As LinkButton = CType(sender, LinkButton)
'Get clicked button row
' Dim row As GridViewRow = CType(lnk.Parent.Parent, GridViewRow)
Dim row As GridViewRow = CType(lnk.NamingContainer, GridViewRow)
'Get row selected
Dim idx As Integer = row.RowIndex
'get CartID
Dim lblCartID As Label = CType(row.Cells(0).FindControl("lblCartID"), Label)
Dim SCCartID As String = lblCartID.Text.ToString
'get ProductID
Dim lblProductID As Label = CType(row.Cells(0).FindControl("lblProductID"), Label)
Dim SCProductID As String = lblProductID.Text.ToString
'get ProductName
Dim lblProduct As Label = CType(row.Cells(0).FindControl("lblProduct"), Label)
Dim SCProduct As String = lblProduct.Text.ToString
'get Size
Dim lblSize As Label = CType(row.Cells(0).FindControl("lblSize"), Label)
Dim SCSize As String = lblSize.Text.ToString
'get Price
Dim lblPrice As Label = CType(row.Cells(0).FindControl("lblPrice"), Label)
Dim SCPrice As String = lblPrice.Text.ToString
'get Quantity
Dim lblQuantity As Label = CType(row.Cells(0).FindControl("lblQuantity"), Label)
Dim SCQuantity As String = lblQuantity.Text.ToString
'get Subtotal
Dim lblSubtotal As Label = CType(row.Cells(0).FindControl("lblSubtotal"), Label)
Dim SCSubtotal As String = lblSubtotal.Text.ToString
'get HoursWork
Dim lblHoursWork As Label = CType(row.Cells(0).FindControl("lblHoursWork"), Label)
Dim SCHoursWork As String = lblHoursWork.Text.ToString
'get Weight
Dim lblWeight As Label = CType(row.Cells(0).FindControl("lblWeight"), Label)
Dim SCWeight As String = lblWeight.Text.ToString
Dim conn As SqlConnection = New SqlConnection(ConnectionString)
' start of category check
Dim cmd4 As SqlCommand = New SqlCommand
cmd4.CommandText = "SELECT products.CategoryID FROM products INNER JOIN Cart on products.ProductID = cart.ProductID WHERE cart.productID=#ProductID"
Dim ProductID2 As SqlParameter = New SqlParameter("#ProductID", SqlDbType.Int, 4)
ProductID2.Value = SCProductID
cmd4.Parameters.Add(ProductID2)
cmd4.Connection = conn
conn.Open()
cmd4.ExecuteNonQuery()
Dim reader As SqlDataReader = cmd4.ExecuteReader
Dim CategoryID As Integer
While reader.Read()
CategoryID = CType(reader.Item("CategoryID"), Integer)
End While
'Testing CategoryID value = success
lblNoStock.Visible = True
lblNoStock.Text = CategoryID
conn.Close()
'Nest IF statement based on Category ID 1,2, cannot be reduced in Quantity
If CategoryID = "3" Or "4" Then
' Run quantity check – And update if possible
Dim exists As Boolean = False
'cart quantity
Dim cmd As SqlCommand = New SqlCommand
cmd.CommandText = "Select Quantity from Cart where CartID = #CartID"
cmd.Connection = conn
' conn.Close()
conn.Open()
'rename cart id 5
Dim CartID5 As SqlParameter = New SqlParameter("#CartID", SqlDbType.Int, 4)
CartID5.Value = SCCartID
cmd.Parameters.Add(CartID5)
'check if more than 1 in cart
exists = (CType(cmd.ExecuteScalar, Integer) > 1)
If exists Then
'show label to say no more in stock
lblNoStock.Visible = True
' lblNoStock.Text = "Available!"
conn.Close()
' update quantity & subtotal
Dim cmd1 As SqlCommand = New SqlCommand
cmd1.CommandText = "UPDATE Cart SET Quantity = Quantity - 1, Subtotal = #Subtotal - #Price WHERE CartID = #CartID"
'update hourswork
Dim cmd2 As SqlCommand = New SqlCommand
cmd2.CommandText = "UPDATE Cart SET HoursWork = (HoursWork - (Select Products.HoursWork FROM Products WHERE Products.ProductID = Cart.ProductID)) WHERE CartID = #CartID"
'UPDATE PRODUCTS STOCK + 1
'"UPDATE Products Set Stock = Stock + 1 WHERE ProductID = #ProductID"
Dim cmd3 As SqlCommand = New SqlCommand
'UPDATE weight
cmd3.CommandText = "UPDATE Cart SET Weight = (Weight - (Select Products.Weight FROM Products WHERE Products.ProductID = Cart.ProductID)) WHERE CartID = #CartID"
cmd1.Connection = conn
cmd2.Connection = conn
cmd3.Connection = conn
conn.Open()
Dim PProductID As SqlParameter = New SqlParameter("#ProductID", SqlDbType.Int, 4)
PProductID.Value = SCProductID
cmd1.Parameters.Add(PProductID)
Dim Subtotal As SqlParameter = New SqlParameter("#Subtotal", SqlDbType.Decimal, 5)
Subtotal.Value = SCSubtotal
cmd1.Parameters.Add(Subtotal)
Dim Price As SqlParameter = New SqlParameter("#Price", SqlDbType.Decimal, 5)
Price.Value = SCPrice
cmd1.Parameters.Add(Price)
Dim CartID As SqlParameter = New SqlParameter("#CartID", SqlDbType.Int, 4)
CartID.Value = SCCartID
cmd1.Parameters.Add(CartID)
Dim CartID2 As SqlParameter = New SqlParameter("#CartID", SqlDbType.Int, 4)
CartID2.Value = SCCartID
cmd2.Parameters.Add(CartID2)
Dim CartID3 As SqlParameter = New SqlParameter("#CartID", SqlDbType.Int, 4)
CartID3.Value = SCCartID
cmd3.Parameters.Add(CartID3)
Try
cmd1.ExecuteNonQuery()
cmd2.ExecuteNonQuery()
cmd3.ExecuteNonQuery()
cmd.ExecuteReader()
'show label to quantity updated
lblNoStock.Visible = True
' lblNoStock.Text = "Updated!"
Finally
conn.Close()
'Response.Redirect("Cart2.aspx")
End Try
Else
'show label to say no more in stock
lblNoStock.Visible = True
lblNoStock.Text = "Cannot reduce quantity: Remove from Cart!"
End If
' else
' lblNoStock.Visible = True
' lblNoStock.Text = "Cannot reduce quantity of Detailing/ Valeting services: Remove from Cart!"
Else
'Outer ELSE
'show label to say cannot change quantity
lblNoStock.Visible = True
lblNoStock.Text = "Quantity cannot be changed for Detailing and Valeting services!"
End If
End Sub
I am also having the same issue with the "+" link button to increase quantity of selected product by 1 in the cart. Reduced code:
Protected Sub lIncrease_Click(ByVal sender As Object, ByVal e As EventArgs)
Dim conn As SqlConnection = New SqlConnection(ConnectionString)
Dim exists As Boolean = False
'Check available in Products table STOCK
Dim cmd As SqlCommand = New SqlCommand
cmd.CommandText = "Select Stock from Products where ProductID = #ProductID"
cmd.Connection = conn
conn.Open()
Dim ProductID As SqlParameter = New SqlParameter("#ProductID", SqlDbType.Int, 4)
ProductID.Value = SCProductID
cmd.Parameters.Add(ProductID)
'check if more than 0 in stock
exists = (CType(cmd.ExecuteScalar, Integer) > 0)
If exists Then
conn.Close()
Dim cmd4 As SqlCommand = New SqlCommand
cmd4.CommandText = "SELECT products.CategoryID FROM products INNER JOIN Cart on products.ProductID = cart.ProductID WHERE cart.productID=#ProductID"
Dim ProductID2 As SqlParameter = New SqlParameter("#ProductID", SqlDbType.Int, 4)
ProductID2.Value = SCProductID
cmd4.Parameters.Add(ProductID2)
cmd4.Connection = conn
conn.Open()
cmd4.ExecuteNonQuery()
Dim reader As SqlDataReader = cmd4.ExecuteReader
Dim CategoryID As Integer
While reader.Read()
CategoryID = CType(reader.Item("CategoryID"), Integer)
End While
'Testing CategoryID value = success
' lblNoStock.Visible = True
'lblNoStock.Text = CategoryID
conn.Close()
'NESTED IF STATEMENT
If CategoryID = "3" Or "4" Then
' UPDATE cart QUANTITY & SUBTOTAL based on CartID
cmd1.CommandText = "UPDATE Cart SET Quantity = Quantity + 1, Subtotal = #Subtotal + #Price WHERE CartID = #CartID"
Dim cmd2 As SqlCommand = New SqlCommand
'UPDATE cart HOURSWORK
cmd2.CommandText = "/"
Dim cmd3 As SqlCommand = New SqlCommand
'UPDATE cart HOURSWORK
cmd3.CommandText = "/"
cmd1.Connection = conn
cmd2.Connection = conn
cmd3.Connection = conn
conn.Open()
//Declared Parameters
Try
cmd1.ExecuteNonQuery()
cmd2.ExecuteNonQuery()
cmd3.ExecuteNonQuery()
cmd.ExecuteReader()
Finally
conn.Close()
Response.Redirect("Cart2.aspx")
End Try
Else
'Nested ELSE
'show label to say cannot change quantity
lblNoStock.Visible = True
lblNoStock.Text = "Quantity cannot be changed for Detailing and Valeting services!"
End If
Else
'show label to say no more in stock
lblNoStock.Visible = True
lblNoStock.Text = "Sorry out of stock!"
End If
End Sub
Two tables:
CART (CartID, UserID, DateCreated, ProductID, ProductName, Size, Price, Quantity, Subtotal, HoursWork)
PRODUCTS (ProductID, Name, SDescription, Price, Size, Images, Thumbnail, Weight, LDescription, Stock, CategoryID, HoursWork)
All working correctly now.
Changed from:
Dim reader As SqlDataReader = cmd4.ExecuteReader
Dim CategoryID As Integer
While reader.Read()
CategoryID = CType(reader.Item("CategoryID"), Integer)
End While
conn.Close()
If CategoryID = "3" Or "4" Then
To:
Dim reader As SqlDataReader = cmd4.ExecuteReader
While reader.Read()
lblTest3.Text = CType(reader.Item("CategoryID"), Integer)
End While
conn.Close()
If lblTest3.Text.Contains("3") Or lblTest3.Text.Contains("4") Then
Dim LoginUser As MembershipUser = Membership.GetUser(HttpContext.Current.User.Identity.Name)
Dim sFormat As String = "00.00"
'Dim LoginUser = "P002"
Dim sqlapt As SqlDataAdapter = New SqlDataAdapter("select * from wpchannel", connection)
Dim sqlds As DataSet = New DataSet()
Dim sqldt As DataTable = New DataTable()
sqlapt.Fill(sqlds, "wpaccess")
sqldt = sqlds.Tables(0)
'Dim sum As Double
Dim row As DataRow
For Each row In sqldt.Rows
Dim strDetail As String
strDetail = row("username")
lbluserchk.Text = strDetail
If lbluserchk.Text = LoginUser.ToString Then
Dim sqlapt1 As SqlDataAdapter = New SqlDataAdapter("select * from wpchannel where username='" + LoginUser.ToString + "'", connection)
Dim sqlds1 As DataSet = New DataSet()
Dim sqldt1 As DataTable = New DataTable()
sqlapt1.Fill(sqlds1, "wpchannel")
sqldt1 = sqlds1.Tables(0)
Dim username As String = sqldt1.Rows(0).Item(1).ToString
Dim productid As String = sqldt1.Rows(0).Item(2).ToString
lblcheck1.Text = username.ToString
lblcheck2.Text = productid
'New check
Dim da As SqlDataAdapter
Dim ds As DataSet = New DataSet()
Dim dt As DataTable = New DataTable()
Dim sqlquery2 = "select convert(varchar(10), convert(datetime, dn.curdatetime),20) as DnDate ,DN.telcoid As TelecoId,round(convert(decimal(18,2),DN.USD),2) as USD,DN.DNStatus As DnStatus,count(*) as Total,sum(round(convert(decimal(18,2),DN.USD),2)) as subtotal from DN left join MO on DN.moid = mo.linkid where mo.channeltype in (select channelid from wpchannel where username='" + LoginUser.ToString + "') Group by convert(varchar(10), convert(datetime, dn.curdatetime),20),DN.telcoid,DN.USD,DN.DNStatus order by DnDate,dn.telcoid,dnstatus,USD"
da = New SqlDataAdapter(sqlquery2, connection)
da.Fill(ds, "MO")
dt = ds.Tables(0)
ViewState("dtpayment") = dt
Session("dtpayment") = dt
GridView1.DataSource = dt
GridView1.DataBind()
GridView1.FooterRow.Cells(2).Font.Bold = True
GridView1.FooterRow.Cells(2).ForeColor = Color.Black
GridView1.FooterRow.Cells(2).Text = " Grand Total:"
GridView1.FooterRow.Cells(2).HorizontalAlign = HorizontalAlign.Right
Dim sum As Double = Convert.ToDouble(dt.Compute("SUM(" + (dt.Columns(5).ColumnName) + ")", String.Empty))
Dim footernum As Double = sum.ToString
GridView1.FooterRow.Cells(3).Text = footernum.ToString()
Dim sumnum As Double = sum.ToString
lblsum.Text = sumnum.ToString()
ViewState("dt") = dt
ViewState("sort") = "Asc"
VerifyRenderingInServerForm(GridView1)
Exit For
Else
Dim cmd As SqlCommand
Dim da1 As SqlDataAdapter
Dim ds1 As DataSet = New DataSet()
Dim dt1 As DataTable = New DataTable()
'Dim sqlquery1 = "select convert(varchar(10), convert(datetime, dn.curdatetime),20) as DnDate ,DN.telcoid As TelecoId,round(convert(decimal(18,2),DN.USD),2) as USD,DN.DNStatus As DnStatus,count(*) as Total from DN left join MO on DN.moid = mo.linkid Group by convert(varchar(10), convert(datetime, dn.curdatetime),20),DN.telcoid,DN.USD,DN.DNStatus order by DnDate DESC,dn.telcoid,dnstatus,USD"
cmd = New SqlCommand
cmd.Connection = connection
cmd.CommandText = "logReport"
cmd.CommandType = CommandType.StoredProcedure
da1 = New SqlDataAdapter(cmd)
da1.Fill(ds1, "MO")
dt1 = ds1.Tables(0)
ViewState("dtpayment") = dt1
Session("dtpayment") = dt1
GridView1.DataSource = dt1
GridView1.DataBind()
GridView1.FooterRow.Cells(2).Font.Bold = True
GridView1.FooterRow.Cells(2).ForeColor = Color.Black
GridView1.FooterRow.Cells(2).Text = " Grand Total:"
GridView1.FooterRow.Cells(2).HorizontalAlign = HorizontalAlign.Right
Dim sum As Double = Convert.ToDouble(dt1.Compute("SUM(" + dt1.Columns(2).ColumnName + ")", String.Empty)) * Convert.ToDouble(dt1.Compute("SUM(" + dt1.Columns(4).ColumnName + ")", String.Empty))
Dim footernum As Double = sum
GridView1.FooterRow.Cells(3).Text = footernum.ToString()
Dim sumnum As Double = sum.ToString
lblsum.Text = sumnum.ToString()
ViewState("dt") = dt1
ViewState("sort") = "Asc"
VerifyRenderingInServerForm(GridView1)
Continue For
End If
'Exit Sub
Next row
Catch ex As Exception
Label1.Text = ex.ToString
'jscript = ("<script language=""JavaScript"">alert(""Error! Cannot conect to the database."");</script>")
'RegisterClientScriptBlock(x, jscript)
End Try
May I know how to rebind data to grid view table after update? Below is what I have tried so far:
Dim conn As New MySqlConnection
conn.ConnectionString = "server = localhost; user id = root; password = root; database = db_fyp"
Dim com As New MySqlCommand
Dim dt As New DataTable
Dim query As String
query = "update tblorder set OrderStatus = #OrderStatus where UserId = #UserId "
com = New MySqlCommand(query, conn)
com.Parameters.AddWithValue("#OrderStatus", tOrderStatus)
com.Parameters.AddWithValue("#UserId", Session("Username"))
conn.Open()
com.ExecuteNonQuery()
BindData()
conn.Close()
Here is my BindData function for insert data into grid view table. This part is working perfectly.
Private Sub BindData()
Dim conn As New MySqlConnection
conn.ConnectionString = "server = localhost; user id = root; password = root; database = db_fyp"
Dim com As New MySqlCommand
Dim dr As MySqlDataReader
Dim query As String
Dim dt As New DataTable
conn.Open()
query = "select FoodName, Qty, IngredientName, Quantity, OrderStatus from tblorder, tblorderdetail, tblfood, tblcustomizefooddetail, tblcustomizeingredient, tblordercustomize where UserId = #UserId and OrderStatus = #OrderStatus and tblorder.OrderId = tblorderdetail.OrderId and tblorderdetail.FoodId = tblfood.FoodId and tblorderdetail.OrderDetailId = tblordercustomize.OrderDetailId and tblfood.FoodId = tblcustomizefooddetail.FoodId and tblcustomizeingredient.IngredientId = tblcustomizefooddetail.IngredientId and tblordercustomize.IngredientId = tblcustomizeingredient.IngredientId"
com = New MySqlCommand(query, conn)
com.Parameters.AddWithValue("#UserId", Session("Username"))
com.Parameters.AddWithValue("#OrderStatus", "Pending")
dr = com.ExecuteReader
dt.Load(dr)
Session("OderTable") = dt
GridView1.DataSource = dt
GridView1.DataBind()
conn.Close()
End Sub
you already have a function to populate the grid, simply call it from within the updating code:
Dim conn As New MySqlConnection
conn.ConnectionString = "server = localhost; user id = root; password = root; database = db_fyp"
Dim com As New MySqlCommand
Dim dt As New DataTable
Dim query As String
query = "update tblorder set OrderStatus = #OrderStatus where UserId = #UserId "
com = New MySqlCommand(query, conn)
com.Parameters.AddWithValue("#OrderStatus", tOrderStatus)
com.Parameters.AddWithValue("#UserId", Session("Username"))
conn.Open()
com.ExecuteNonQuery()
conn.Close()
'you dont need all that
'dt.Load(????)
'GridView1.DataSource = dt
'GridView1.DataBind()
'just call this
BindData()
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim ds As DataSet = New DataSet()
Dim param As SqlParameter = New SqlParameter("#user_code", SqlDbType.Char, 4)
param.Value = "0016"
Const sqlstr As String = "select sectors.sector_code,sector_name from user_sectors inner join sectors on user_sectors.sector_code = sectors.sector_code where user_code = #user_code and sectors.sector_code not in ('z')"
Dim da As SqlDataAdapter = New SqlDataAdapter(sqlstr, _con)
da.Fill(ds)
ddl.DataValueField = "sector_code"
ddl.DataTextField = "sector_name"
ddl.DataSource = ds.Tables(0)
ddl.DataBind()
End Sub
Code for adding parameter to dataadapter
SqlConnection conn = new SqlConnection("Data
Source=localhost;Database=Northwind;Integrated Security=SSPI");
SqlCommand command = new SqlCommand("GetProducts", conn);
command.CommandType = CommandType.StoredProcedure;
command.Parameters.Add("#CategoryID", SqlDbType.Int).Value = 1;
SqlDataAdapter adapter = new SqlDataAdapter(command);
DataSet ds = new DataSet();
adapter.Fill(ds, "Products");
add parameter to you data adapter object like this
da.Parameters.Add(param)
this is missing in your code
MSDN : Using Parameters with a DataAdapter