[英]How to refresh or show immediately in datagridview after inserting?
After entering data into all the textbox, and after clicking the submit button, it won't immediately show in the datagridview, I need to reopen the form in order to see the new inserted row.在所有文本框中输入数据后,单击提交按钮后,它不会立即显示在 datagridview 中,我需要重新打开表单才能看到新插入的行。 What code to put in for refresh?
输入什么代码刷新?
Followed @user3222297 code.遵循@user3222297 代码。 by adding grdPatient.Update();
通过添加 grdPatient.Update(); and grdPatient.Refresh();
和 grdPatient.Refresh(); still doesn't get refreshed after i click the OK for insert successful.
单击确定插入成功后,仍然没有刷新。
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.SqlClient;
using System.Configuration;
namespace GRP_02_03_SACP
{
public partial class patient : Form
{
// Data Table to store employee data
DataTable Patient = new DataTable();
// Keeps track of which row in Gridview
// is selected
DataGridViewRow currentRow = null;
SqlDataAdapter PatientAdapter;
public patient()
{
InitializeComponent();
}
private void btnSubmit_Click(object sender, EventArgs e)
{
if (btnSubmit.Text == "Clear")
{
btnSubmit.Text = "Submit";
txtpFirstName.Focus();
}
else
{
btnSubmit.Text = "Clear";
int result = AddPatientRecord();
if (result > 0)
{
MessageBox.Show("Insert Successful");
grdPatient.Update();
grdPatient.Refresh();
}
else
MessageBox.Show("Insert Fail");
}
}
private int AddPatientRecord()
{
int result = 0;
// TO DO: Codes to insert customer record
//retrieve connection information info from App.config
string strConnectionString = ConfigurationManager.ConnectionStrings["sacpConnection"].ConnectionString;
//STEP 1: Create connection
SqlConnection myConnect = new SqlConnection(strConnectionString);
//STEP 2: Create command
String strCommandText = "INSERT PATIENT(pFirstName, pLastName, pContact, pAddress, pCity, pZip, pNationality, pRace, pIC, pGender, pDOB, pBloodType, pEmail) "
+ " VALUES (@pFirstName,@pLastName,@pContact,@pAddress,@pCity,@pZip,@pNationality, @pRace, @pIC, @pGender, @pDOB, @pBloodType, @pEmail)";
SqlCommand updateCmd = new SqlCommand(strCommandText, myConnect);
updateCmd.Parameters.AddWithValue("@pFirstName", txtpFirstName.Text);
updateCmd.Parameters.AddWithValue("@pLastName", txtpLastName.Text);
//updateCmd.Parameters["@clientid"].Direction = ParameterDirection.Output;
updateCmd.Parameters.AddWithValue("@pContact", txtpContact.Text);
updateCmd.Parameters.AddWithValue("@pAddress", txtpAddress.Text);
updateCmd.Parameters.AddWithValue("@pCity", txtpCity.Text);
updateCmd.Parameters.AddWithValue("@pZip", txtpZip.Text);
updateCmd.Parameters.AddWithValue("@pNationality", txtpNationality.Text);
updateCmd.Parameters.AddWithValue("@pRace", txtpRace.Text);
updateCmd.Parameters.AddWithValue("@pIC", txtpIC.Text);
updateCmd.Parameters.AddWithValue("@pGender", txtpGender.Text);
updateCmd.Parameters.AddWithValue("@pDOB", txtpDOB.Text);
updateCmd.Parameters.AddWithValue("@pBloodType", txtpBloodType.Text);
updateCmd.Parameters.AddWithValue("@pEmail", txtpEmail.Text);
// STEP 3 open connection and retrieve data by calling ExecuteReader
myConnect.Open();
// STEP 4: execute command
// indicates number of record updated.
result = updateCmd.ExecuteNonQuery();
// STEP 5: Close
myConnect.Close();
return result;
}
private void patient_Load(object sender, EventArgs e)
{
LoadPatientRecords();
}
private void LoadPatientRecords()
{
//retrieve connection information info from App.config
string strConnectionString = ConfigurationManager.ConnectionStrings["sacpConnection"].ConnectionString;
//STEP 1: Create connection
SqlConnection myConnect = new SqlConnection(strConnectionString);
//STEP 2: Create command
string strCommandText = "SELECT pFirstName, pLastName, pContact, pAddress, pCity, pZip, pNationality, pRace, pIC, pGender, pDOB, pBloodType, pEmail, pUsername, pPassword FROM Patient";
PatientAdapter = new SqlDataAdapter(strCommandText, myConnect);
//command builder generates Select, update, delete and insert SQL
// statements for MedicalCentreAdapter
SqlCommandBuilder cmdBuilder = new SqlCommandBuilder(PatientAdapter);
// Empty Employee Table first
Patient.Clear();
// Fill Employee Table with data retrieved by data adapter
// using SELECT statement
PatientAdapter.Fill(Patient);
// if there are records, bind to Grid view & display
if (Patient.Rows.Count > 0)
grdPatient.DataSource = Patient;
}
}
}
Only need to fill datagrid again like this:只需要像这样再次填充数据网格:
this.XXXTableAdapter.Fill(this.DataSet.XXX);
If you use automaticlly connect from dataGridView this code create automaticlly in Form_Load()如果您使用从 dataGridView 自动连接此代码在 Form_Load() 中自动创建
Try refreshing the datagrid after each insert每次插入后尝试刷新数据网格
datagridview1.update();
datagridview1.refresh();
Hope this helps you!希望这对你有帮助!
Use LoadPatientRecords()
after a successful insertion.成功插入后使用
LoadPatientRecords()
。
Try the below code试试下面的代码
private void btnSubmit_Click(object sender, EventArgs e)
{
if (btnSubmit.Text == "Clear")
{
btnSubmit.Text = "Submit";
txtpFirstName.Focus();
}
else
{
btnSubmit.Text = "Clear";
int result = AddPatientRecord();
if (result > 0)
{
MessageBox.Show("Insert Successful");
LoadPatientRecords();
}
else
MessageBox.Show("Insert Fail");
}
}
You can set the datagridview
DataSource
to null
and rebind it again.您可以将
datagridview
DataSource
设置为null
并再次重新绑定。
private void button1_Click(object sender, EventArgs e)
{
myAccesscon.ConnectionString = connectionString;
dataGridView.DataSource = null;
dataGridView.Update();
dataGridView.Refresh();
OleDbCommand cmd = new OleDbCommand(sql, myAccesscon);
myAccesscon.Open();
cmd.CommandType = CommandType.Text;
OleDbDataAdapter da = new OleDbDataAdapter(cmd);
DataTable bookings = new DataTable();
da.Fill(bookings);
dataGridView.DataSource = bookings;
myAccesscon.Close();
}
I don't know if you resolved your problem, but a simple way to resolve this is rebuilding the DataSource (it is a property) of your datagridview.我不知道你是否解决了你的问题,但解决这个问题的一个简单方法是重建你的 datagridview 的数据源(它是一个属性)。 For example:
例如:
grdPatient.DataSource = MethodThatReturnList();
So, in that MethodThatReturnList() you can build a List (List is a class) with all the items you need.因此,在 MethodThatReturnList() 中,您可以使用您需要的所有项目构建一个列表(列表是一个类)。 In my case, I have a method that return the values for two columns that I have on my datagridview.
就我而言,我有一个方法可以返回我在 datagridview 上的两列的值。
Pasch.帕施。
试试下面的一段代码。
this.dataGridView1.RefreshEdit();
this.donorsTableAdapter.Fill(this.sbmsDataSet.donors);
I tried everything mentionned here and it all failed.我尝试了这里提到的所有内容,但都失败了。 What I needed to do was
Thread.Sleep(1_000);
我需要做的是
Thread.Sleep(1_000);
between the database update and the datagridview refresh.在数据库更新和 datagridview 刷新之间。 It seems that the datagridview was refreshing before the data was updated in the database.
在数据库中更新数据之前,datagridview 似乎正在刷新。
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