Insert statement with where clause in C#

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How do I use insert Statement with where clause ..

I have two tables
1. Company
2. Product
In Company Table there is ID(PK) and Company Name
In product Table there is ProductID(PK), Price, QTy, and CompanyID(FK)

when user select company name from comboBox and enter ProductID , Price and Qty it should be save in the table of the particular Product Table.

What I have tried:

insert into T1 (SR_NO,AH,Model,Price,Qty,ID) Values('" + textBox1.Text + "','" + textBox2.Text + "','" + textBox3.Text + "','" + textBox4.Text + "', '" + textBox5.Text + "',1 where ID = '1')

Posted 19-Nov-16 18:43pm

Mahrukh Razi

Updated 15-Sep-17 20:02pm

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[no name] 20-Nov-16 9:44am

Using a proper parameterized query might make whatever error you see on your screen that we can't see, go away all by itself.

3 solutions

Solution 1

If you are inserting, why you need the Pk of Product? You can have that column auto incremented.

Then your insert statement should look like below.

SQL

INSERT INTO Product (ColumnNames) VALUES (AllValues) WHERE CompanyId = ComboBoxSelectedCompanyId

Posted 19-Nov-16 19:13pm

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Comments

Mahrukh Razi 20-Nov-16 2:36am

It gives error near where clause

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 21-Nov-16 1:11am

What is the error?

Solution 3

It gives an error.
Incorrect syntax near the keyword 'where'
My code is..
string query= "Insert Into Course(PostNum,CourseName)values('" + TextBox1.Text + "','" + DropDownList1.SelectedItem + "')where StID'"+Label1.Text+"'";
SqlCommand cmd = new SqlCommand(query, con);

Posted 15-Sep-17 20:02pm

Member 13361792

Comments

Patrice T 16-Sep-17 3:33am

This is not a solution to this question.
Open a new question for your problem and delete this.

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#realJSOP · Accepted Answer · 2016-11-20T04:56:00

First, your closing parenthesis is in the wrong place.

SQL

insert into T1 (SR_NO, AH, Model, Price, Qty, ID) 
Values('" + textBox1.Text + 
       "', '" + textBox2.Text + 
       "', '" + textBox3.Text + 
       "', '" + textBox4.Text + 
       "', '" + textBox5.Text + 
       "', " 1) where ID = 1

Second, you should be using parameterized queries, which would change your query to look like this:

SQL

insert into T1 (SR_NO, AH, Model, Price, Qty, ID) 
Values(@srNo, @ah, @model, @price, @qty, @id) where ID = 1

Third, you don't need a where clause in an insert statement. Why are you assigning an ID yourself? You can make the database do that for you when a record is inserted. This (along with parameterized queries) would make your query look like this:

SQL

insert into T1 (SR_NO, AH, Model, Price, Qty) 
Values(@srNo, @ah, @model, @price, @qty)

Finally, follow industry practice when writing SQL queries. It will generally help you read the query better.

SQL

INSERT INTO [database_name].[dbo].[T1] ([SR_NO], [AH], [Model], [Price], [Qty]) 
VALUES (@srNo, @ah, @model, @price, @qty)

Insert statement with where clause in C#

3 solutions

Solution 2

Solution 1

Solution 3

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