How To Prevent Crashes When Parameter Is Null
Feb 18, 2010
i am inserting the value of dynamic controls into the db like so;
Dim ae1 As DropDownList = FindControl("AreasExpertise1")
If (ae1 IsNot Nothing) Then
x.Parameters.AddWithValue("@areasexpertise1", ae1.SelectedValue)
End If
then in my query i have parameters like so;
INSERT INTO [foo] ([etc], [etc], [etc], [areasexpertise1], [areasexpertise2])
VALUES (@etc, @etc, @etc, @areasexpertise1, @areasexpertise2)
When the user fills out the form, they see only areasexpertise1 and have to press a button to dynamically insert another area of expertise...If they only have 1 area of expertise, the query crashes and says 'must declare variable @areasexpertise2.Please can you tell me a way to either insert nulls when the parameters are empty, or to ignore them?
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Feb 24, 2010
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Feb 13, 2010
I have this "SP" that will insert one record to Table 1 and multiple records in Table 2 ...
I just need a way to prevent null values to be inserted in Table 2 ? here is how it looks in my table 2
ID Col1 col2 Col3
3 AB CDE EFGs
4 NULL NULL NULL
4 GDF SSS DFGD
i don't want to insert the second record ... how do i do that using existing "SP" ?
here it is my SP :
CREATE PROCEDURE dbo.Insertvalues
(
@newParentName NVARCHAR(100),
@NewJobTitle NVARCHAR(100) ,
@NewDepartment NVARCHAR (100) ,
@NewCompanyName NVARCHAR (100) ,
@NewURLAddress NVARCHAR (100) ,
@NewOfficePhone char(15),
@NewFax char(15),
@NewMobilePhone char(10),
@NewEmailAddress nvarchar(50),
@NewChiledGroup NVARCHAR(100) ,
@Newchiled_jobTitle nvarchar(100),
@Newchiled_department nvarchar(100),
@Newchiled_phone char(15),
@Newchiled_mobile char(10),
@Newchiled_email nvarchar(50),
@NewChiledGroup1 NVARCHAR(100) ,
@Newchiled_jobTitle1 nvarchar(100),
@Newchiled_department1 nvarchar(100),
@Newchiled_phone1 char(15),
@Newchiled_mobile1 char(10),
@Newchiled_email1 nvarchar(50)
)
AS
-- add parents group
INSERT INTO parents_group (Name,JobTitle,Department,CompanyName,URLAddress,OfficePhone,Fax,MobilePhone,EmailAddress)
VALUES (@newParentName,@NewJobTitle,@NewDepartment,@NewCompanyName,@NewURLAddress,@NewOfficePhone,@NewFax,@NewMobilePhone,@NewEmailAddress)
--obtain inserted id
DECLARE @NewParentId INT
SET @NewParentId = scope_identity()
-- insert into childe table
INSERT INTO childe_group
(groupId , chiled_name,chiled_jobTitle,chiled_department,chiled_phone,chiled_mobile,chiled_email)
(SELECT @NewParentId,@NewChiledGroup,@Newchiled_jobTitle,@Newchiled_department,@Newchiled_phone,@Newchiled_mobile,@Newchiled_email)
UNION
(SELECT @NewParentId,@NewChiledGroup1,@Newchiled_jobTitle1,@Newchiled_department1,@Newchiled_phone1,@Newchiled_mobile1,@Newchiled_email1)
GO
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Stack Trace:
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Parameter name: text]
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[Code]....
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[Code]....
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[Code]....
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Description:
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Exception Details: System.ArgumentNullException: Value cannot be null.Parameter name: type
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