我是 C#、Windows 窗体和 datagridviews 的新手。我有一个选项卡式表单:选项卡 1 显示练习表的数据网格视图;选项卡 2 用于向表中添加新练习。练习表通过 test_ExercisesDataSet、vwexercisesBindingSource、vw_ExercisesTableAdapter 绑定到数据网格视图。
我不确定我需要做什么来重新绑定/刷新绑定源,以便在我切换回选项卡 1 时刷新 datagridview。如果我完全关闭表单并重新启动它,我可以看到新行桌子。
我在 Web 和 StackOverflow 上都看到了很多例子,但我仍然不明白我做错了什么。
顺便说一句,我正在使用 Visual Studio 2010。
任何帮助表示赞赏!
谢谢!
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace testTabbedInterface
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public string GetConnectionString()
{
return connString;
}
private void Form1_Load(object sender, EventArgs e)
{
// TODO: This line of code loads data into the 'test_ExercisesDataSet.vw_exercises' table. You can move, or remove it, as needed.
this.vw_exercisesTableAdapter.Fill(this.test_ExercisesDataSet.vw_exercises);
exerciseListDataGridView.DataSource = this.test_ExercisesDataSet.vw_exercises;
}
private void InsertExercise(string exerciseName, string exerciseDescription, string exerciseBegin)
{
var conn = new SqlConnection(GetConnectionString());
const string InsertExerciseSql = @"INSERT INTO database.dbo.exercises
(PK_exerciseUID,
exerciseName,
exerciseDescription,
exerciseBegin,
exerciseEnd)
VALUES
(@PK_exerciseUID,
@exerciseName,
@exerciseDescription,
@exerciseBegin,
NULL)";
try
{
SqlCommand cmd = new SqlCommand(InsertExerciseSql, conn);
var param = new SqlParameter[4];
Guid exerciseGUID = Guid.NewGuid();
param[0] = new SqlParameter("@PK_exerciseUID", exerciseGUID);
param[1] = new SqlParameter("@exerciseName", exerciseName);
param[2] = new SqlParameter("@exerciseDescription", exerciseDescription);
//Convert date(s) to correct format
DateTime exerciseBeginConverted = Convert.ToDateTime(exerciseBegin);
param[3] = new SqlParameter("@exerciseBegin", exerciseBeginConverted);
foreach (SqlParameter t in param)
{
cmd.Parameters.Add(t);
}
conn.Open();
cmd.CommandType = CommandType.Text;
cmd.ExecuteNonQuery();
MessageBox.Show("Test/Exercise, " + exerciseName + ", successfully added!", "Success!", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (SqlException ex)
{
string msg = "Error inserting into 'exercises': ";
msg += ex.Message;
throw new Exception(msg);
}
finally
{
conn.Close();
}
}
private void saveExerciseButton_Click(object sender, EventArgs e)
{
InsertExercise(exerciseName.Text, exerciseDescription.Text, exerciseBegin.Text);
this.exerciseListDataGridView.EndEdit();
tabControl1.SelectTab("testExerciseTab");
}
private void addExButton_Click(object sender, EventArgs e)
{
tabControl1.SelectTab("exerciseTab");
}
private void reloadExListButton_Click(object sender, EventArgs e)
{
this.exerciseListDataGridView.Refresh();
}
}
}