如何在文本框中编写XML？ [英] How to Write XML in Textbox?

问题描述

我从Database中获取文本框中的XML数据。现在我想在DB中进行一些更改和更新。当我尝试更改文本框不允许文本时，但它会删除数据。我的代码

 private void button1_Click（object sender，EventArgs e）
 {
 connection.Open（）; 
 string str =从表中选择col1，其中Clo2 ='+ txt1.Text +'; 
 SqlCommand command = new SqlCommand（str，con）; 
 XmlReader xmlreader = command .ExecuteXmlReader（）; 
 xmlreader.Read（）; 
 txt2.Text = xml.ReadOuterXml（）; 
 XmlDocument document = new XmlDocument（）; 
 document .PreserveWhitespace = true; 
 document .LoadXml（txt2.Text）; 
 
} 
 

如何在文本框中输入文本

解决方案

< blockquote> *你确定你没有在这个上面放置另一个文本框吗？

*文本框属性ReadOnly = false？

*文本框属性Enabled = true？

I fetch the XML data in Textbox from Database.Now i want to make some changes and update in DB.when i try to make changes textbox not allowed text,but it remmove the data. MY code

private void button1_Click(object sender, EventArgs e)
   {
       connection.Open();
       string str = "select col1 from Table where Clo2='" + txt1.Text + "'";
       SqlCommand command = new SqlCommand(str, con);
       XmlReader xmlreader = command .ExecuteXmlReader();
       xmlreader.Read();
       txt2.Text = xml.ReadOuterXml();
       XmlDocument document = new XmlDocument();
       document .PreserveWhitespace = true;
       document .LoadXml(txt2.Text);

   }

how can i enter text in Textbox

解决方案

* Are you certain you didnt place another textbox above this one?
* Is the textbox attribute ReadOnly=false?
* Is the textbox attribute Enabled=true?

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