Question

I am trying to learn how to take control values and insert them into a db table. For example I have a textbox called NameBox. I want to grab the text from that textbox and add it into a database table.

I am not trying to do it the best way but the simplest so I can wrap by head around the concept. So far I have:

<asp:TextBox ID="NameBox" runat="server"></asp:TextBox>
<asp:TextBox ID="EmailBox" runat="server"></asp:TextBox>

Here is the code-behind.

protected void Button1_Click(object sender, EventArgs e)
{
    string name1 = NameBox.Text;
    string email1 = EmailBox.Text;

    System.Data.SqlClient.SqlConnection sqlConnection1 =
   new System.Data.SqlClient.SqlConnection(@"Data Source=E:\*********.com1.5\**********.com\App_Data\Home.sdf;");

    System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand();
    cmd.CommandType = System.Data.CommandType.Text;
    cmd.CommandText = "INSERT INTO CustomerList (Name, Email) VALUES (" + name1 + "," + email1 + ")";
    cmd.Connection = sqlConnection1;

    sqlConnection1.Open();
    cmd.ExecuteNonQuery();
    sqlConnection1.Close();
}

Error message I am getting is

A network-related or instance-specific error occurred while
establishing a connection to SQL Server. The server was not found or
was not accessible. Verify that the instance name is correct and that
SQL Server is configured to allow remote connections. (provider: SQL
Network Interfaces, error: 26 – Error Locating Server/Instance
Specified)

I googled the error message and a lot of what i been reading is saying my connection is probably wrong. I tried testing this by using some of the drag and drop controls and I have a repeater working with the same connection string.

Right now I don’t even really know if this is right approach. As I am sure you can all relate at one point or another I want to see it work on a very simple level so i can start to play with it and see how it all really works.

Answer 1

Just copy paste the connection string you are using for the repeater code, and paste it in the Button1_Click code, where you create a new connection. There might be an extra space, or some capital letter mismatch. And for insertions, I would create a stored procedure in the database, which takes Name and Email parameters, and use the SqlCommand to execute the stored procedure.

CREATE PROCEDURE INSERT_NAME_EMAIL_DATA
    @NAME VARCHAR(100) NULL,
    @EMAIL VARCHAR(100) NULL
AS
BEGIN
      INSERT INTO CustomerList (Name, Email) VALUES (@NAME, @EMAIL)
END  

And in your code you can execute the stored procedure by doing:

cmd.CommandType = System.Data.CommandType.StoredProcedure;
cmd.Parameters.Add(
    new SqlParameter("@NAME", name1));
cmd.Parameters.Add(
    new SqlParameter("@EMAIL", email1));
cmd.Connection = sqlConnection1;

        sqlConnection1.Open();
        cmd.ExecuteNonQuery();
        sqlConnection1.Close();