无法连接数据库 [英] cannot connect with database

问题描述

我正在使用c#Express 2008版.我做了小程序.使用C#Express和sqlserver 2008 Express.但是，当我运行该程序的exe时，它无法与sqlserver连接.但是删除exe后，程序将从应用程序运行 调试文件夹中的文件.

正在关注是我的代码

I am using c# express edition 2008. I did small program  using c# express and sqlserver 2008 express. But when I run exe of the program , it doesnot connect with sqlserver.  But the  program will run from the application after deleting exe file from debug folder.

following  is my code

 

 

private void button2_Click(object sender, EventArgs e)
        {
            try
            {
                planningrecord = SetValuesToMaterial();
                WorkPlanning.InsertSchedule( planningrecord);
                
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message.ToString(), "Job Planning...    ", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }

            MessageBox.Show("Record Updated", "Information", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }

private PlanningRecord SetValuesToMaterial()
        {
            try
            {
                MessageBox.Show(Application.ProductName);
               // planningrecord.WorkName = textBox3.Text.Trim();
                planningrecord.WorkDate = DateTime.Today;
                planningrecord.DateFrom = dateTimePicker1.Value;
                planningrecord.DateTo = dateTimePicker2.Value;
                planningrecord.Module = "Academic";
                planningrecord.Groupcode = cmbGroupCode.SelectedValue.ToString();
                planningrecord.WhatWork = richTextBox1.Text.Trim();
                planningrecord.HowDo = richTextBox2.Text.Trim();
                planningrecord.Finished = false;
                planningrecord.Priority = cmbStatus.SelectedItem.ToString();
                planningrecord.Subgroup = cmbSubgroup.SelectedValue.ToString();

            }
            catch (Exception ex)
            {
                MessageBox.Show("Error occurred \nError message:" + ex.Message, Application.ProductName, MessageBoxButtons.OK,
                    MessageBoxIcon.Information);
            }

Please can you advice how I can locate that folder to place config file database path. Following is the error message

'Object reference not set to an instance of an object.'  Please help

推荐答案

连接数据库的代码在哪里?

Where is the code where you connect to the data base???

 

Noam B.

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