Question

在sql server数据库中插入记录。每次插入2条记录，我认为事件发射两次。如何在ado.net中停止两次插入记录。

protected void btnSubmit_Click(object sender, EventArgs e)
{
    try
    {
        CompanyName = txtCompany.Text.Trim();
        InsertData();
    }
    catch (Exception)
    {
        throw;
    }
}

private void InsertData()
{
    if (Page.IsPostBack)
    {
        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["kernelCS"].ConnectionString);
        SqlCommand cmd = new SqlCommand(@"INSERT INTO [tbl_Leads]([CompanyName])VALUES(@CompanyName)", con);
        cmd.Parameters.AddWithValue("@CompanyName", txtCompany.Text.ToString());
        con.Open();
        cmd.ExecuteNonQuery();
        DataSet ds = new DataSet();
        SqlDataAdapter da = new SqlDataAdapter(cmd);
        da.Fill(ds);
        ...
    }
}

Answer 1

您通过cmd.ExecuteNonQuery()和da.Fill(ds)语句在代码中触发了两次查询。

Answer 2

试试这个：

private void InsertData()
{
  SqlConnection con = new  SqlConnection(ConfigurationManager.
  ConnectionStrings["kernelCS"].ConnectionString);
  SqlCommand cmd = new SqlCommand(@"INSERT INTO [tbl_Leads]
  ([CompanyName]) VALUES (@CompanyName)", con);
  cmd.Parameters.AddWithValue("@CompanyName", txtCompany.Text.ToString());

  con.Open();
  cmd.ExecuteNonQuery();
}`

在数据库中插入记录时，它在asp.net中插入两次

2 个答案: