If Request.QueryString("departmentId").ToString() = "0" Then
SqlDataSource1.SelectParameters.Add("departmentId", TypeCode.Int32, 0.ToString())
I want to add a null value instead of 0.string() for the sqlparameter departmentId how do I do this?
I have a <asp:Parameter Name="Person_ID" Type="String" />. My Updatecommand contains, among other things: Person_ID = @Person_ID. That's all fine.
In my code behind, how to I say that I don't want to specify a value for this parameter, but rather want it to use the default value (which in this case is NULL?)
Or rather than telling it to use the Default value, is it possible to set it to Null? I tried setting the value to Null, but the sql code that got generated was Person_ID = "NULL", which of course, is wrong. How do I get it to generate Person_ID=NULL?
Protected Sub FormView1_ItemUpdating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.FormViewUpdateEventArgs) Handles FormView1.ItemUpdating
Dim IsPresCheck As CheckBox = CType(FormView1.FindControl("IsPrestigeChkBx"), CheckBox)
If IsPresCheck.Checked = "True" Then
SqlDataSource1.SelectParameters.Add("IsPrestige", System.TypeCode.Int32, 1.ToString)
Else
SqlDataSource1.SelectParameters.Add("IsPrestige", System.TypeCode.Int32, 0.ToString)
End If
but for some reason it's not seeing the parameter and returning an error
I want to check if an sqlparameter exists before adding a new one so I don't get the error - @param was supplied multiple times. IS this possible?
View 7 RepliesI got variables to send as parameters to Stored Procedure,
How to send it using SqlParameter[] arrParam?
How to write those variables to the arrParam?
I am about to write a method that uses SQLParameter to insert some data into SQL server. However, do I "have" to specify a DBType? If not how is this handled?
Here is an example of the code I intend to write:
[Code]....
I am trying to display a profile page on my website using the SQL Datasource_Selecting and when the page loads I get this error "An SqlParameter with ParameterName '@UserName' is not contained by this SqlParameterCollection."
The code is:
[Code]....
and the sql code is:
[Code]....
here is my code for selectiong some records from db table
string strSql = "select * from mtblNBD where SentTo=@SentTo and InternalStatus Is NULL order by DeadLine desc";
SqlCommand com = new SqlCommand(strSql, con);
com.Parameters.Add("@SentTo", SqlDbType.NVarChar, 50).Value = (string)Session["uname"];
here I am using parameters for SenTo field but not for NULL so it is ok... or should I use parameters for this field where value is NULL , if yes then how can I use parameter for this
I have page that has a datasource. The datasource executes a stored procedure and returns results. If the result is NULL, I'd like to forward the user to an error page. How would I accomplish this with ASP.NET and C#?
View 1 RepliesI need to retrive a value from a column of a table per stored proc. This is usually an integer, but also can be null. I get this value and store it in a session variable.
Later, I need to pass this same session variable to another stored proc.
Session["myVariable"] = ds.tables[0].rows[0][1]; // this can be null or an integer
somewhere else in the project, I need to pass it to another stored proc exactly as received.
[code]....
here is my update query syntax.my problem is.if i update only logo1 and logo3 with null logo2 and img null then my query should be update the other record.just dont update null value record but other should be update.but below my query can not update any record.
UPDATE tbitem set itemname= @itemname,note=@note,
price=@price,qty=@qty,logo1=@logo1,
logo2=@logo2,logo3=@logo3,img=@img
where id =@id
and @logo1 is
null and @logo2
is null
and @logo3
is null
and @img is
null
having a table with column having null values
how to identify row of a column contains null value?
i tried isnull,nullif properties but such functions im getting emptied rows
I get a recordset returned from DB and try to load it. However sometimes field "LastRun" may be empty (NULL). when i have this it compiles fine but errors out when value is null m_LastRun = Convert.ToDateTime(r["LastRun"]); when I take out Convert.ToDateTime it doesn't even compile.
View 3 RepliesHow can i get the values even when the Source or url is null from the below query
SELECT a.id,
isnull((SELECT STUFF((SELECT
'<li><a href="'+url+'">'+Source_Name+'</a>
<span>(' + k.Source +')</span></li>' end
FROM table1 i, table2 k, table3 j where
i.CategoryID = j.Category_ID and i.CategoryID = c.Category_ID and i.Source = k.ID
FOR XML PATH('')),1, 0, '')), '') AS Source_url,
FROM @table4 c INNER JOIN table5 v
on c.Category_ID = v.Category_ID
I have a datareader like so but when it encounters a NULL database value, I get the error message "Conversion from type 'DBNull' to type 'String' is not valid."
Dim myReader As SqlDataReader = myCommand.ExecuteReader()
Dim yValues As New List(Of Double)
With myReader
If .HasRows Then
While .Read
yValues.Add(Double.Parse(.GetValue(0)))........
I have a dropdown list that uses an ObjectDataSource. The select method of the ObjectDataSource needs to localize the TextField, so i create a Dictionary<int, string> and use GetLocalResourceObject as such:
[Code]....
In the Local Resource file, there is status0, status1, and status2, all with a value (Deleted, Active, Inactive). The dropdown and object datasource like:
[Code]....
Now, if I use an ObjectDataSource and put the DropDownList's DataSourceID to it, I will get a null reference on the lookup to the GetLocalResourceObject. BUT If I manually set DataSource/DataBind on the dropdown list on Page_Load, it works fine:
[Code]...
OR If I move the status values to a global resource file and use GetGlobalResource instead of GetLocal, it works fine! Why can I not use an ObjectDataSource and LocalResourceObject in this way?
i have some problem in passing null value to an integer datatype in sql. Here is my code:-
[Code]....
The if statement within query is where i am having problem!
Assume in my table named school has a column named StudentNo
I try this script
select * from school where StudentNo <> 'AA'
I just wondering why this where clause "where StudentNo <> 'AA' always return false when StudentNo is null?
In following SQL query: SELECT DISTINCT CodeID, CodeDesc FROM Faults.TblFltClearCodes AS TblFltClearCodes
I am getting a list but there is no null value.Within this query I would like to get only one NULL value at the top and then the list.How to do this? Explicitly I am not allowed to give a null value in the table in DB.
[Code]....
iam using asp.net2.0 with c# with sql server 2000 when iam executing the procedure in local system it is working fine.but when iam executing in client system procedure returns null value, i have checked all connection string , and session value all are working
My SQL field 'modified' is a DateTime type and if the value is NULL in SQL I want to display a 'n/a' string.
I am using FormView templates to display the value.If I use this statement -> ISNULL(Items.modified,'') AS Modified; I get '1/1/1900 12:00:00 AM' in return.If I use this statement -> ISNULL(Items.modified,'n/a') AS Modified; I get 'Conversion failed when converting datetime from character string.'I could go ahead and change my class from "public DateTime Modified" to "public String Modified" but I want the field to represent its real value which is DateTime.I am not inserting the date value back into the table since the sprocs all take care of that for me. I just want to display the 'n/a' string.So, is there any way to display a SQL DateTime type as a string when its value is NULL inside the table?
what i would like to do is when the value of my sqldatasource is returned, then if it is null, run a code, in my case, redirect them to the login page, heres my code:
string connectionString = ConfigurationManager.ConnectionStrings["PokemonPlanetConnectionStrings"].ConnectionString;
string insertSql = "SELECT * FROM LoggedInUsers WHERE UserId = @UserId";
using (SqlConnection myConnection = new SqlConnection(connectionString))
[Code]....
Now what i would simply like to do is, if the select statement searches the database, and the result is not found, the simply redirect them to "register.aspx"
I am creating a TableAdapter using corresponding wizard, with a GetDataByID() query. The select statement is like this:select * from books where ID = ?Thus books are filtered by ID. But in case a null is passed as a parameter, I want to select all records rather than none. Could you please tell me how I can do it?
View 4 Repliesi want to insert null in smalldatetime column, when user doesn't select any date from the calender control i want to insert null in the databse, i am using typed dataset in my application.
here's my code
[code]....
it gives me the exception "SqlDateTime overflow. Must be between 1/1/1753 12:00:00 AM and 12/31/9999 11:59:59 PM."
I have pass following SQL Query to the through ObjectDataSource
[Code]....
And I am passing parameter through QueryString and My idea is like when empty string is pass it should show me all records but when I am passing empty string ObjectDataSource is making NULL and I am not getting desire result