使用数据集将一个gridview值复制到另一个gridview [英] copying the one gridview value to another gridview using dataset

问题描述

嗨 我需要将一个gridview单元格值复制到另一个gridview
例如:
gridview1:
a b c
1 s 2
2 v 3
3 d 4

第二个Gridview值应为
a g h
1
1
2
2
2
3
3
3
但是我得到的是空值(空行).
我的编码

Hi i need to copy the one gridview cell value to another gridview
eg:
gridview1:
a b c
1 s 2
2 v 3
3 d 4

The Second Gridview Value Should Be
a g h
1
1
2
2
2
3
3
3
but i am getting the null value(empty rows).
My Coding

ArrayList da1 = new ArrayList();
            ArrayList da2 = new ArrayList();
            int a1 = 0;
            int  a2 = 0;
           
         
         DataSet dc = (DataSet) Session["dtb"];
        //DataRow tr = (DataRow)Session["dg"];

        foreach (GridViewRow row1 in grv1.Rows)
        {
            a1 = int.Parse(row1.Cells[3].Text);
           
            da1.Add(a1);
                
        }
        int ri = 0;
        //int rd = 0;
        foreach (GridViewRow row1 in grv1.Rows)
        {
            
            //foreach (GridViewRow row2 in grv2.Rows)
            //{
            foreach (DataRow dr in dc.Tables[0].Rows)
            {
               //rd = int.Parse(dr.ToString());
                foreach (int ir in da1)
                {
                    
                  
                    for (; ri < ir; ri++)
                    {

                        //row2.Cells[1].Text = row1.Cells[1].Text;
                       dr[1] = row1.Cells[1].Text;
                     
                        

                    }

                    ri = ir;

                }

                //break; 
            }
            //break;

            //    continue;
        }

grv2.DataSource= dc;
                                
                 
        }

推荐答案

一些观察结果:
-变量id在两个循环外均已初始化，并且其值在循环内从未更改.但是，它用于确定是否将设置row2值.这是正确的吗?
-内循环遍历目标gridview中每一行的所有源行.反之亦然(循环在源和内部循环，在目标循环中添加值).

Few observations:
- variable id is initialized outside both loops and it''s value is never changed inside the loops. However it''s used to decide if row2 value will be set. Is this correct
- the inner loop goes through all source rows for each row in target gridview. Should the loops vice versa (loop the source and inside that add values in target loop).

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