winform for循环,该如何处理
日期：2014-05-18 浏览次数：21058 次
winform for循环
------解决方案--------------------
- C# code
for (int i = 0; i < dgv_Data2.Rows.Count - 1; i++)
{
for (int j = 1; j < dgv_Data2.Rows.Count - 1; j++)
{
if ((i + j) <= dgv_Data2.Rows.Count)
{
string value1 = Convert.ToString(dgv_Data2.Rows[i].Cells[2].Value);
string value2 = Convert.ToString(dgv_Data2.Rows[i + j].Cells[2].Value);
if (value1 == value2)
{
MessageBox.Show("此货物已存在！");
}
else
{
string name = dgv_Data2.Rows[i].Cells[2].Value.ToString();
string sql = "select * from MIS_MaterielRegiser where MR_Name='" + name + "'";
ocmd = new OleDbCommand(sql, ocnn);
OleDbDataReader reader = ocmd.ExecuteReader();
reader.Read();
dgv_Data2.Rows[i].Cells[1].Value = reader["MR_Number"].ToString();
dgv_Data2.Rows[i].Cells[3].Value = reader["MR_Model"].ToString();
dgv_Data2.Rows[i].Cells[4].Value = reader["MR_Unit"].ToString();
}
}
}
}
------解决方案--------------------
- C# code
int length = dgv_Data2.Rows.Count - 1;
for (int i = 0; i <length ; i++)
{
for (int j = length; j > i; j--)
{
string value1 = Convert.ToString(dgv_Data2.Rows[j].Cells[2].Value);
string value2 = Convert.ToString(dgv_Data2.Rows[j-1].Cells[2].Value);
if (value1 == value2)
{
MessageBox.Show("此货物已存在！");
}
else
{
string name = dgv_Data2.Rows[i].Cells[2].Value.ToString();
string sql = "select * from MIS_MaterielRegiser where MR_Name='" + name + "'";
ocmd = new OleDbCommand(sql, ocnn);
OleDbDataReader reader = ocmd.ExecuteReader();
reader.Read();
dgv_Data2.Rows[i].Cells[1].Value = reader["MR_Number"].ToString();
dgv_Data2.Rows[i].Cells[3].Value = reader["MR_Model"].ToString();
dgv_Data2.Rows[i].Cells[4].Value = reader["MR_Unit"].ToString();
}
｝
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------解决方案--------------------
你是要比较所有的行么？
for (int j = 0; j < dgv_Data2.Rows.Count - 1; j++)
{
if (i!=j)
{
string value1 = Convert.ToString(dgv_Data2.Rows[i].Cells[2].Value);
string value2 = Convert.ToString(dgv_Data2.Rows[j].Cells[2].Value);
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