即时通讯使用C#作为前端和MS Access作为后端如何刷新数据网格?
我米仅显示当在组合框中的索引被改变
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
refershGridView(comboBox1.Text);
}
但数据网格当我进行任何更新到数据网格,更新只反映后,我做出选择的指数变化情况
我试图datagidview1.refresh(),也叫我refershGridView(comboBox1.Text)功能隐含
但我的网格视图Refre酒店畲族只有当我做出一个选择的指数变化
代码refershGridView(comboBox1.Text)
private void refershGridView(string tableName)
{
saveBttnSwitch = 0;//for save button swicth
//setting back to intial user interface ..
clearVisibilty();
clearall();
button1.Visible = true;
button3.Visible = false;
label11.Visible = false;
try
{
OleDbConnection mycon = new OleDbConnection();
mycon.ConnectionString = ConnString;
//create the database query
string query = null;
if (tableName == "employee")
{
query = "SELECT fname,lname,ssn FROM employee";
dataGridView1.Visible = true;
}
if (tableName == "project")
{
query = "SELECT pname,pnumber FROM project";
dataGridView1.Visible = true;
}
//create an OleDbDataAdapter to execute the query
OleDbDataAdapter dAdapter = new OleDbDataAdapter(query, mycon);
//create a command builder
OleDbCommandBuilder cBuilder = new OleDbCommandBuilder(dAdapter);
//create a DataTable to hold the query results
DataTable dTable = new DataTable();
//fill the DataTable
try
{
dAdapter.Fill(dTable);
}
catch (OleDbException exp)
{
label11.Text = "file couldnt be found...kindly check Db file location ";
label11.Visible = true;
button1.Visible = false;
}
// DataGridView dgView = new DataGridView();
//BindingSource to sync DataTable and DataGridView
BindingSource bSource = new BindingSource();
//set the BindingSource DataSource
bSource.DataSource = dTable;
//set the DataGridView DataSource
dataGridView1.DataSource = bSource;
// dataGridView1.Dock = DockStyle.Fill;
dataGridView1.AutoGenerateColumns = true;
mycon.Close();
}
catch (System.Data.SqlClient.SqlException ex)
{
throw new InvalidOperationException("Data could not be read", ex);
}
this.button2.Visible = false;
}
可我知道你当前的代码在refershGridView方法 – Bryan
其清爽,如果再次选择同样的指数。我也尝试调用refreshGridView(combo1.text)在我更新值的地方引用调试模式但不是当我执行时没有调试 – Arunachalam
我已经发布代码 – Arunachalam