Binding and Reading Usage of ListView in WinForm for C#

Introduction

ListView control can directly view data information that makes operations much easier. This article will show you some usages of ListView on binding and reading in WinForm for C#. Wish this would be useful for some of you.

Use ListView to Add Table Header 

• Directly add table header in control edit column. Name is binding code value and Text is the value displays in the header. 
• Add table header in codes.

　　ColumnHeader ch = new ColumnHeader();//declare header and create object 
                    ch.Text = "111"; //header name
                    ch.Name = "222"; //binding code value
                    ch.Width = 100; //header width 
                    this.listView_EH.Columns.Add(ch); //add header into ListView

If we need add the 2nd column, we can also use this method.

ListView control binding data information

• After acquire dt or ds, foreach records of each line. Then, give value to the listView relative column. By using this method, data source and binding methods can’t be separated.

Note:The binding information order is the same as table header displayed order

//Bind ListView, display data information    
    private void SetListView()   
       {             
 this.listView_EH.Items.Clear();       
       DataSet ds = qt.GetQuestionTypeInfo();       
       if (ds != null && ds.Tables.Count > 0 && ds.Tables[0].Rows.Count > 0)             
 {                  foreach (DataRow dr in ds.Tables[0].Rows)             
     {                   
   string strQuestionTypeID = dr["QuestionTypeID"].ToString();     
                 string strQuestionTypeName = dr["QuestionTypeName"].ToString();     
                 int intsort = Convert.ToInt32(dr["sort"].ToString());               
       string strAnswerTypeName = dr["AnswerTypeName"].ToString();                  
    ListViewItem lvItem = new ListViewItem();                 
     lvItem.Text = intsort.ToString();                
      lvItem.Tag = dr;                 
     lvItem.SubItems.Add(strQuestionTypeName.ToString());    
                  lvItem.SubItems.Add(strAnswerTypeName.ToString());           
           this.listView_EH.Items.Add(lvItem);        
          }            
  }         
  }

Then, the codes of ListView reading selected line can be this:

 //Read ListView line information       
   private void listView_EH_Click(object sender, EventArgs e)  
        {              
if (this.listView_EH.Items.Count <= 0) return;       
       if (this.listView_EH.SelectedItems.Count <= 0) return;    
          int index = this.listView_EH.SelectedItems[0].Index;        
      if (index < 0) return;         
     DataRow dr = (DataRow)(this.listView_EH.Items[index].Tag);     
         this.txt_questiontypeID.Text = dr["QuestionTypeID"].ToString();    
          this.num_sort.Text = dr["sort"].ToString();           
   this.txt_questiontypename.Text = this.listView_EH.SelectedItems[0].SubItems[1].Text.ToString(); 
             this.com_answertype.Text = dr["AnswerTypeName"].ToString();       
   }

• After acquire dt or ds, for each row and each column of data source and give value to ListView column. By using this method, data source and binding method can be separated

Note: The order of selected data source and the order displayed is the same. And displayed row and table header is related.

//Binding ListView, display data information     
    private void SetListView()       
   {         
    this.listView_EH.Items.Clear();        
      DataSet ds = qt.GetQuestionTypeInfo(); 
     if (ds != null && ds.Tables.Count > 0 && ds.Tables[0].Rows.Count > 0)     
         {           
       ListViewItem lv = null;            
      for (int i = 0; i < ds.Tables[0].Rows.Count; i++)        
          {           
           lv = new ListViewItem(ds.Tables[0].Rows[i][1].ToString());                  
    lv.Tag = ds.Tables[0].Rows[i][0].ToString();            
         for (int j = 2; j < ds.Tables[0].Columns.Count; j++)            
          {          
                lv.SubItems.Add(ds.Tables[0].Rows[i][j].ToString());              
        }              
        this.listView_EH.Items.Add(lv);         
         }                    
           }       
    }

Then, the codes that ListView reading current selected row:

　　//Read ListView line information    
     private void listView_EH_Click(object sender, EventArgs e)     
     {         
     this.num_sort.Text = this.listView_EH.SelectedItems[0].SubItems[0].Text;      
        this.txt_questiontypename.Text = this.listView_EH.SelectedItems[0].SubItems[1].Text;        
      this.com_answertype.Text = this.listView_EH.SelectedItems[0].SubItems[2].Text;

Hide Column

This solution describes that in the second method above, some columns which were hidden can be read.

In the second method: lv = new ListViewItem(ds.Tables[0].Rows[i][1].ToString()); means the first row data information in ListView. lv.Tag=ds.Tables[0].Rows[i][0].ToString(); stands for the hidden column

When read the hidden column, we can use the code below to acquire the value

　　this.txt_questiontypeID.Text = this.listView_EH.SelectedItems[0].Tag.ToString();

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)