C# 如何用c更新Sql中的值#
有人能帮我找到正确的更新公式吗C# 如何用c更新Sql中的值#,c#,asp.net,C#,Asp.net,有人能帮我找到正确的更新公式吗 protected void Button1_click(object sender, EventArgs e) { string connectionString1 = WebConfigurationManager.ConnectionStrings["kickstarterConn"].ConnectionString; SqlConnection com = new SqlConnection(connection
protected void Button1_click(object sender, EventArgs e)
{
string connectionString1 = WebConfigurationManager.ConnectionStrings["kickstarterConn"].ConnectionString;
SqlConnection com = new SqlConnection(connectionString1);
com.Open();
string sql1 = "UPDATE Project SET Foundet = @Foundet ";
SqlCommand cmd1 = new SqlCommand(sql1, com);
cmd1.Parameters.AddWithValue("@Foundet", TextBox7.Text);
com.Close();
}
您应该执行该命令
com.Open();
string sql1 = "UPDATE Project SET Foundet = @Foundet ";
SqlCommand cmd1 = new SqlCommand(sql1, com);
cmd1.Parameters.AddWithValue("@Foundet", TextBox7.Text);
cmd1.ExecuteNonQuery();
com.Close();
你差不多完成了。只需在
com.Close()
之前添加cmd1.ExecuteNonQuery
…并使用using(var-com=new-SqlConnection(connectionString1){}
仍然不会更改sql中的变量。您的sql命令会更改该表中所有行的表“Project”中的列“Foundet”。这就是您的意思吗?另外: