通过单击按钮刷新另一个表单 DataGridView
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【中文标题】通过单击按钮刷新另一个表单 DataGridView【英文标题】：Refresh another forms DataGridView from button click 【发布时间】：2014-02-17 21:47:20 【问题描述】：我有一个表单 (customersForm) 显示带有客户信息的 datagridview。第二个表单 (viewForm) 允许用户查看、编辑、删除和更新选定的 datagridview 行。当我单击更新或删除时，我希望 customerForm 上的 datagridview 刷新显示更新的数据。如何通过单击按钮执行此操作？
这是viewForms的完整代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlServerCe;
namespace Lewis_Warby_Airbrushing
public partial class viewForm : Form
DataRowView Data = null;
public viewForm(DataRowView dr)
InitializeComponent();
Data = dr;
private void closeBTN_Click(object sender, EventArgs e)
this.Close();
private void viewForm_Load(object sender, EventArgs e)
refTxt.Text = Data["Reference"].ToString().Trim();
firstTxt.Text = Data["First Name"].ToString().Trim();
surenameTxt.Text = Data["Surename"].ToString().Trim();
address1Txt.Text = Data["Address Line 1"].ToString().Trim();
address2Txt.Text = Data["Address Line 2"].ToString().Trim();
countyTxt.Text = Data["County"].ToString().Trim();
postTxt.Text = Data["Post Code"].ToString().Trim();
contactTxt.Text = Data["Contact Number"].ToString().Trim();
emailTxt.Text = Data["Email Address"].ToString().Trim();
private void deleteBTN_Click(object sender, EventArgs e)
if (MessageBox.Show("Customer information will be perminantly deteled. Do you with to continue? ", "Confirm Delete", MessageBoxButtons.YesNo) == DialogResult.Yes)
string constring = @"Data Source=|DataDirectory|\LWADataBase.sdf";
string Query = "delete from customersTBL where Reference ='" + this.refTxt.Text + "';";
SqlCeConnection conDataBase = new SqlCeConnection(constring);
SqlCeCommand cmdDataBase = new SqlCeCommand(Query, conDataBase);
SqlCeDataReader myReader;
try
conDataBase.Open();
myReader = cmdDataBase.ExecuteReader();
MessageBox.Show("Customer information has been deleted", "Deleted Sucessfully");
while (myReader.Read())
MessageBox.Show("Please exit the Customers window and re-open to update the table");
this.Close();
//displays a system error message if a problem is found
catch (Exception ex)
MessageBox.Show(ex.Message);
private void editBTN_Click(object sender, EventArgs e)
bool notEditable = true;
if (editBTN.Text == "Update")
int UserID = Convert.ToInt32(refTxt.Text);
UpdateDataBase( UserID );
editBTN.Text = "Edit";
deleteBTN.Visible = true;
notEditable = true;
else
deleteBTN.Visible = false;
editBTN.Text = "Update";
deleteBTN.Visible = false;
notEditable = false;
firstTxt.ReadOnly = notEditable;
surenameTxt.ReadOnly = notEditable;
address1Txt.ReadOnly = notEditable;
address2Txt.ReadOnly = notEditable;
countyTxt.ReadOnly = notEditable;
contactTxt.ReadOnly = notEditable;
emailTxt.ReadOnly = notEditable;
postTxt.ReadOnly = notEditable;
private void UpdateDataBase(int customerID)
if (MessageBox.Show("Customer information will be updated. This change cannot be undone. Are you sure you want to continue? ", "Confirm Edit", MessageBoxButtons.YesNo) == DialogResult.Yes)
string constring = @"Data Source=|DataDirectory|\LWADataBase.sdf";
string Query = @"update customersTBL set [First Name] = @fname,
surename = @sur, [Address Line 1] = @addr1,
[Address Line 2] = @addr2, County = @county,
[Post Code] = @pcode, [Email Address] = @mail, [Contact Number] = @ctNo
WHERE Reference = @id";
using (SqlCeConnection conDataBase = new SqlCeConnection(constring))
using (SqlCeCommand cmdDataBase = new SqlCeCommand(Query, conDataBase))
try
conDataBase.Open();
cmdDataBase.Parameters.AddWithValue("@fname", this.firstTxt.Text);
cmdDataBase.Parameters.AddWithValue("@sur", this.surenameTxt.Text);
cmdDataBase.Parameters.AddWithValue("@addr1", this.address1Txt.Text);
cmdDataBase.Parameters.AddWithValue("@addr2", this.address2Txt.Text);
cmdDataBase.Parameters.AddWithValue("@county", this.countyTxt.Text);
cmdDataBase.Parameters.AddWithValue("@pcode", this.postTxt.Text);
cmdDataBase.Parameters.AddWithValue("@mail", this.emailTxt.Text);
cmdDataBase.Parameters.AddWithValue("@ctNo", this.contactTxt.Text);
cmdDataBase.Parameters.AddWithValue("@id", customerID);
int rowsUpdated = cmdDataBase.ExecuteNonQuery();
if (rowsUpdated == 0)
MessageBox.Show("No customer found to update");
MessageBox.Show("Customer information sucessfully updated", "Update Sucessfull");
catch (Exception ex)
MessageBox.Show(ex.Message);
customerForm的完整代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlServerCe;
namespace Lewis_Warby_Airbrushing
public partial class customerForm : Form
public customerForm()
InitializeComponent();
public void customerForm_Load(object sender, EventArgs e)
// TODO: This line of code loads data into the 'lWADataBaseDataSet.customersTBL' table. You can move, or remove it, as needed.
timer1.Start();
this.lWADataBaseDataSet.EnforceConstraints = false;
this.customersTBLTableAdapter.Fill(this.lWADataBaseDataSet.customersTBL);
private void viewBTN_Click(object sender, EventArgs e)
int selectedRowIndex = customersTBLDataGridView.SelectedCells[0].RowIndex;
DataGridViewRow selectedRow = customersTBLDataGridView.Rows[selectedRowIndex];
viewForm frm2 = new viewForm((DataRowView)selectedRow.DataBoundItem);
frm2.ShowDialog();
addForm addForm = new addForm();
private void addBTN_Click(object sender, EventArgs e)
if (addForm == null || addForm.IsDisposed == true)
addForm = new addForm();
addForm.ShowDialog();
this.customersTBLTableAdapter.Fill(this.lWADataBaseDataSet.customersTBL);
int count = 0;
private void timer1_Tick(object sender, EventArgs e)
count = customersTBLBindingSource.Count;
statusLBL.Text = "You currently have "+count.ToString()+" customer(s) stored in this database";
searchForm searchForm = new searchForm();
private void searchBTN_Click(object sender, EventArgs e)
if (searchForm == null || searchForm.IsDisposed == true);
searchForm = new searchForm();
searchForm.ShowDialog();
【问题讨论】：
网格绑定了吗？如果是，那是什么？ 您的意思是您想让 viewForm 打开以供编辑，但是随着更改发生，您希望这些更改反映在 customerForm 中？ 不，viewForm 关闭，我希望 customerForm datagridview 刷新显示更新的数据。 当你关闭 viewForm 时，是否已经将更改推送到数据库中？ 是的，添加代码会帮助您回答问题吗？ 【参考方案1】：您没有在问题中指定很多内容，但让我们假设这种情况：
当显示 customerView 时，您调用数据库以使用客户详细信息填充 DataGridView。在某些时候，您要么在 DGV 行上单击鼠标右键，要么选择一行并单击一个按钮，然后显示 viewForm，传入当前选定行中的数据。同样，您没有指定这是如何完成的，但我们假设您传入了某种数据传输对象。
完成编辑后，单击一个按钮，将更改保存到数据库，然后关闭 viewForm。
根据您的 cmets，这是您现在应用程序中的一般工作流程。
在这种情况下，您可以简单地重新获取数据，就像您在 viewForm.ShowDialog() 方法返回时首次显示 customerView 时所做的那样。
除非有其他我没有得到的东西，否则可以像这样轻松完成：
//customerForm
private void button1_Click(object sender, EventArgs e)
ViewFormClass viewForm = new ViewFormClass();
viewForm.SetCustomerData(dataObject);
viewForm.ShowDialog(); // will stop here waiting for viewForm to close
this.FetchCustomerData();
FetchCustomerData() 与您在打开 customerView 时调用的方法相同。您通常会在那里获取数据并将其绑定到控件。
干杯
编辑：
根据自己的代码，简单修改一下：
private void viewBTN_Click(object sender, EventArgs e)
int selectedRowIndex = customersTBLDataGridView.SelectedCells[0].RowIndex;
DataGridViewRow selectedRow = customersTBLDataGridView.Rows[selectedRowIndex];
viewForm frm2 = new viewForm((DataRowView)selectedRow.DataBoundItem);
frm2.ShowDialog();
this.customersTBLTableAdapter.Fill(this.lWADataBaseDataSet.customersTBL);
【讨论】：
我已经编辑了问题并为您添加了代码。 是的，工作流程和我描述的差不多，所以当你关闭 viewForm 时，会在 customerForm 中恢复执行，所以只需重新获取数据并将数据重新绑定到 DataGridView。跨度> 我需要如何调整我的代码以使其按我的意愿工作？我很难理解它。 显示你的代码来填充customerView DataGridView，我会调整我的。 我已经在问题中发布了它，它是完整的代码以上是关于通过单击按钮刷新另一个表单 DataGridView的主要内容，如果未能解决你的问题，请参考以下文章