C#新手求解 增加一个按钮，实现打印GridView中的数据

[huitian1621]

protected void Button4_Click(object sender, EventArgs e)
    {
        if (GridView1.Rows.Count == 0)
            return;
        Microsoft.Office.Interop.Excel.Application Excel = new Microsoft.Office.Interop.Excel.Application();
        Excel.Application.Workbooks.Add(true);
        Excel.Visible = true;

        for (int i = 0; i > GridView1.Columns.Count; i++)
        {
            Excel.Cells[1, i + 1] = GridView1.Columns[i].HeaderText;
        }
        for (int i = 0; i > GridView1.Columns.Count; i++)
        {
            for (int j = 0; j < GridView1.Columns.Count; j++)
            {
                Excel.Cells[i + 2, j + 1] = GridView1.Rows[i].Cells[j].Text;
            }
        }
    }

填充不进数据，出来的报表都是空的。。。求指导。。。

[bdmh]

调试，一步步确认是否存在数据

[huitian1621]

GridView中是有数据的，但是我调试的时候发现取不到数据，不知道哪里有问题
从这句for (int i = 0; i > GridView1.Columns.Count; i++)
就直接跳出去了。。。

[EnForGrass]

for (int i = 0; i > GridView1.Rows.Count; i++)
{
for (int j = 0; j < GridView1.Columns.Count; j++)
{
Excel.Cells[i + 2, j + 1] = GridView1.Rows[i].Cells[j].Text;
}
}

[huitian1621]

现在代码是这样：

protected void Button4_Click(object sender, EventArgs e)
    {
        if (GridView1.Rows.Count == 0)
            return;
        Microsoft.Office.Interop.Excel.Application Excel = new Microsoft.Office.Interop.Excel.Application();
        Excel.Application.Workbooks.Add(true);
        Excel.Visible = true;

        for (int i = 0; i < GridView1.Columns.Count; i++)
        {
            Excel.Cells[1, i + 1] = GridView1.Columns[i].HeaderText;
        }

        for (int i = 0; i < GridView1.Rows.Count; i++)
        {
            for (int j = 0; j < GridView1.Columns.Count; j++)
            {
                Excel.Cells[i + 2, j + 1] = GridView1.Rows[i].Cells[j].Text;
            }
        }
    }

[huitian1621]

刚发错了，代码这样解决了：

protected void Button4_Click(object sender, EventArgs e)
    {
        if (GridView1.Rows.Count == 0)
            return;
        Microsoft.Office.Interop.Excel.Application Excel = new Microsoft.Office.Interop.Excel.Application();
        Excel.Application.Workbooks.Add(true);
        Excel.Visible = true;

        for (int i = 0; i < GridView1.Columns.Count; i++)
        {
            Excel.Cells[1, i + 1] = GridView1.Columns[i].HeaderText;
        }

        for (int i = 0; i < GridView1.Rows.Count; i++)
        {
            for (int j = 0; j < GridView1.Columns.Count; j++)
            {
                Excel.Cells[i + 2, j + 1] = GridView1.Rows[i].Cells[j].Text;
            }
        }
    }

[huitian1621]

刚发错了，代码是这样的，解决了。谢谢帮忙

protected void Button4_Click(object sender, EventArgs e)
    {
        if (GridView1.Rows.Count == 0)
            return;
        Microsoft.Office.Interop.Excel.Application Excel = new Microsoft.Office.Interop.Excel.Application();
        Excel.Application.Workbooks.Add(true);
        Excel.Visible = true;

        for (int i = 0; i < GridView1.Columns.Count; i++)
        {
            Excel.Cells[1, i + 1] = GridView1.Columns[i].HeaderText;
        }

        for (int i = 0; i < GridView1.Rows.Count; i++)
        {
            for (int j = 0; j < GridView1.Columns.Count; j++)
            {
                Excel.Cells[i + 2, j + 1] = GridView1.Rows[i].Cells[j].Text;
            }
        }
    }