如何在 ToolStripControlHost 内设置 DataGridView 的数据源？ （C# 窗口窗体）
我在 ContextMenu 控件内有一个 DataGridView，请参阅下面的代码片段：
private void Form1_Load(object sender, EventArgs e)
{
SetDataSource(dataSet1);// A populated DataSet
}
protected void SetDataSource(DataSet ds)
{
dataGridView1.DataSource = ds;
ToolStripControlHost tsHost = new ToolStripControlHost(dataGridView1);
contextMenuStrip1.Items.Clear();
contextMenuStrip1.Items.Add(tsHost);
contextMenuStrip1.Show(textBox1, 0, 27);
}
private void button1_Click(object sender, EventArgs e)
{
SetDataSource(dataSet2);// Another populated DataSet
}
这里发生的情况是，当表单打开时，它显示 contextMenu 并在其上显示带有 dataSet1 值的 DataGridView。但是当我单击按钮更改网格的数据源时，它不显示dataSet2的记录。 请帮我解决这个问题...谢谢...
I have a DataGridView inside a ContextMenu control, please see the code snippet below:
private void Form1_Load(object sender, EventArgs e)
{
SetDataSource(dataSet1);// A populated DataSet
}
protected void SetDataSource(DataSet ds)
{
dataGridView1.DataSource = ds;
ToolStripControlHost tsHost = new ToolStripControlHost(dataGridView1);
contextMenuStrip1.Items.Clear();
contextMenuStrip1.Items.Add(tsHost);
contextMenuStrip1.Show(textBox1, 0, 27);
}
private void button1_Click(object sender, EventArgs e)
{
SetDataSource(dataSet2);// Another populated DataSet
}
What happens here is when in the form opens, it shows the contextMenu and display the DataGridView on it with the value of dataSet1. But when I click the button to change the DataSource of the Grid, It doesn't show the records of dataSet2.
Please help me how to fix this... thanks...
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您可以尝试将 DGV 的 DataSource 设置为 BindingSource 对象，然后修改 BindingSource 的 DataSource。如果 BindingSource 没有自动更新，您可以通过调用其CurrencyManager.Refresh() 来强制它更新。
You might try setting the DGV's DataSource to a BindingSource object, and then modifying the BindingSource's DataSource instead. You can force the BindingSource to update, if it doesn't automatically, by invoking its CurrencyManager.Refresh().
已在此处回答。
Answered already here.