更新状态栏文本 [英] Update status bar text

问题描述

这是最简单的事情，但我无法更新状态栏上的文本...我刚开始使用 c# 但找不到解决方案..在所有答案中，接受的答案是 statusBar1.Text = "text";我制作了简单的菜单并在菜单中添加了 LOAD 项目.图片已加载，一切正常，只是状态文本没有更新...顺便说一句，MessageBox 还会在状态栏中显示我需要的正确文本.这是我的代码，但它不起作用:

this is simplest possible thing, but i cant update text on status bar... I just started working in c# but cannot find solution.. in all answers, accepted answer is statusBar1.Text = "text"; I made simple menu and added LOAD item in menu. Picture is loaded, all works fine, just status text doesn't update... Btw, MessageBox also displays right text that i need in status bar. Here is my code, and it just doesn't work:

 private void menuLoad_Click(object sender, EventArgs e)
    {
        OpenFileDialog dlg = new OpenFileDialog();
        dlg.Title = "Load Photo";
        dlg.Filter = "jpg files (*.jpg)"
        + "|*.jpg|All files (*.*)|*.*";
        if (dlg.ShowDialog() == DialogResult.OK)
        {
            try
            {
                statusBar1.Text = "Loading " + dlg.FileName;
                pbxPhoto.Image = new Bitmap(dlg.OpenFile());
                statusBar1.Text = "Loaded " + dlg.FileName;
                MessageBox.Show("Text = " + dlg.FileName); 
            }
            catch (Exception ex)
            {
                statusBar1.Text = "Unable to load file " + dlg.FileName;
                MessageBox.Show("Unable to load file: " + ex.Message);
            }
        }
        dlg.Dispose();
    }

推荐答案

也许文本已经设置但没有被绘制，因为您的线程正忙于加载图片?您可以尝试强制状态栏无效并重新绘制自身:

Maybe the text gets set but just doesn't get painted because your thread is busy loading a picture? You can try to force the status bar to invalidate and repaint itself:

statusBar1.Text = "Loading " + dlg.FileName;
statusBar1.Invalidate();
statusBar1.Refresh();    

pbxPhoto.Image = new Bitmap(dlg.OpenFile());

statusBar1.Text = "Loaded " + dlg.FileName;
statusBar1.Invalidate();
statusBar1.Refresh();    

MessageBox.Show("Text = " + dlg.FileName); 

其实我想我会把它封装成一个方法，像这样:

Actually I think I'd encapsulate this into a method, like this:

private void UpdateStatusBarText(string text)
{
    statusBar1.Text = text;
    statusBar1.Invalidate();
    statusBar1.Refresh();    
}

这样你的 try 块看起来像这样:

This way your try block would look like this:

UpdateStatusBarText("Loading " + dlg.FileName);

pbxPhoto.Image = new Bitmap(dlg.OpenFile());

UpdateStatusBarText("Loaded " + dlg.FileName);
MessageBox.Show("Text = " + dlg.FileName); 

编辑

StatusStrip 控件是一个容器控件.向其中添加一个 ToolStripStatusLabel 项，并更改该控件的文本而不是 statusBar1 的文本:

The StatusStrip control is a container control. Add a ToolStripStatusLabel item to it, and change the text of that control instead of that of statusBar1:

private void UpdateStatusBarText(string text)
{
    toolStripStatusLabel1.Text = text;
    statusBar1.Invalidate();
    statusBar1.Refresh();    
}

这篇关于更新状态栏文本的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！