C# DataGridView 新增列 新增行 操作函数 - [ 自律相互分享,共促一起进步 - 社会的正常运维就这么简单,何以权,何以钱...- 张光荣说的正能量]
时间：2021-07-05 17:27:06
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功能:
一.列相关:
1.追加列,左插列,右插列,
2.删除列
二.行相关:
1.追加行,上插行,下插行
2.删除行,删除所有空行,清空所有数据...
原理:根据对鼠标于 DataGridView 点击区域的判断来 对 点击列 或 点击行 的准确定位,再执行操作...
优点:
1.只需要 CellMouseDown 事件所输出的 DataGridViewCellMouseEventArgs 参数来判断,便可取代 通常情况下对行列操作函数所需要输入的 点击列 或 点击行...
2.具有行列相关操作 某些方面 一定的综合性;
缺点:
1.由于其在某些操作方面的综合性,相比专一针对某个列或某行进行操作的函数肯定稍慢..
注明:
1.所提供的函数可能还没有达到所有情况下的测试,但目前本人还没发现出错的地方...
2.新增列操作函数中有可以改进的地方...[相关代码段有注明]
以下是相关代码:
public static partial class Dgv
{
#region 点击行列 基本信息 获取
/// <summary>
/// 根据鼠标点击的单元格信息,输出 单元格 的作用分类作用区域
/// 注:由于 dgv 的列名行/行标头 都是有不同分工作用的单元格 Cell 组成,所以,以下判断均为判断 点击的 Cell 所在的 行索引与列索引来判断 所属的分类作用区域
/// 时间: 2021/07/02 20:00:58
/// </summary>
/// <param name="e"></param>
/// <returns></returns>
public static EAra _CellMouseDown(object s, DataGridViewCellMouseEventArgs e, out DataGridViewColumn clkDgvC, out DataGridViewRow clkDgvR, out DataGridViewCell clkDgvc)
{
DataGridView dgv = s as DataGridView;
return _CellMouseDown(dgv, e, out clkDgvC, out clkDgvR, out clkDgvc);
}
/// <summary>
/// 根据鼠标点击的单元格信息,输出 单元格 的作用分类作用区域
/// 注:由于 dgv 的列名行/行标头 都是有不同分工作用的单元格 Cell 组成,所以,以下判断均为判断 点击的 Cell 所在的 行索引与列索引来判断 所属的分类作用区域
/// 时间: 2021/07/02 20:00:58
/// </summary>
/// <param name="e"></param>
/// <returns></returns>
public static EAra _CellMouseDown(DataGridView dgv, DataGridViewCellMouseEventArgs e, out DataGridViewColumn clkDgvC, out DataGridViewRow clkDgvR, out DataGridViewCell clkDgvc)
{
#region
clkDgvC = null;
clkDgvR = null;
clkDgvc = null;
EAra eAra = EAra.non;
if (e == null)
eAra = EAra.all;
else
{
#region
int iRow = e.RowIndex;
int iCol = e.ColumnIndex;
if (iRow < 0)
{
#region
if (iCol < 0)
eAra = EAra.all;
else
{
eAra = EAra.col;
clkDgvC = dgv.Columns[iCol];
}
#endregion
}
else if (iCol < 0)
{
eAra = EAra.row;
clkDgvR = dgv.Rows[iRow];//.CurrentRow;
}
else
{
eAra = EAra.cel;
clkDgvc = dgv.Rows[iRow].Cells[iCol];//.CurrentCell;
}
#endregion
}
return eAra;
#endregion
}
/// <summary>
/// 根据鼠标点击的单元格信息,输出 单元格 的作用分类作用区域
/// 注:由于 dgv 的列名行/行标头 都是有不同分工作用的单元格 Cell 组成,所以,以下判断均为判断 点击的 Cell 所在的 行索引与列索引来判断 所属的分类作用区域
/// 时间: 2021/07/02 20:00:58
/// </summary>
/// <param name="e"></param>
/// <returns></returns>
public static EAra _CellMouseDown(DataGridViewCellMouseEventArgs e)
{
#region
EAra eAra = EAra.non;
if (e == null)
eAra = EAra.all;
else
{
#region
int iRow = e.RowIndex;
int iCol = e.ColumnIndex;
if (iRow < 0)
{
#region
if (iCol < 0)
eAra = EAra.all;
else
eAra = EAra.col;
#endregion
}
else if (iCol < 0)
eAra = EAra.row;
else
eAra = EAra.cel;
#endregion
}
return eAra;
#endregion
}
/// <summary>
/// 根据 _CellMouseDown 判断点击的区域, 获取可能与点击操作相关的列 [如:点击单元格对应的列,直击列名列,反之为 null ]
/// 时间: 2021/07/02 20:00:58
/// </summary>
/// <param name="dgv"></param>
/// <param name="e"></param>
/// <param name="clkDgvC"></param>
public static void ClkDgvC(DataGridView dgv, DataGridViewCellMouseEventArgs e, out DataGridViewColumn clkDgvC)
{
#region
clkDgvC = null;
DataGridViewRow clkDgvR = null;
DataGridViewCell clkDgvc = null;
EAra eAra = _CellMouseDown(dgv, e, out clkDgvC, out clkDgvR, out clkDgvc);
if (eAra == EAra.all || eAra == EAra.non)
return;
if (clkDgvR != null)
return;
if (clkDgvC == null)
{
if (clkDgvc == null)
return;
clkDgvC = clkDgvc.OwningColumn;
}
#endregion
}
#endregion
/// <summary>
/// [综合情况] 综合处理
/// 时间: 2021/07/02 23:45:58
/// </summary>
public static class Col2
{
#region
#region [综合情况] 新增列
/// <summary>
/// [综合情况] 新增列
/// </summary>
/// <param name="dgv"></param>
/// <param name="insCelTyp"></param>
/// <param name="colNam"></param>
/// <param name="insRit"></param>
/// <param name="e"></param>
public static void New(DataGridView dgv, DataGridViewCell insCelTyp, string colNam, bool insRit, ref DataGridViewCellMouseEventArgs e)
{
#region
#region
DataGridViewColumn clkDgvC = null;
ClkDgvC(dgv, e, out clkDgvC);
int cnt = dgv.ColumnCount;
cnt++;
if (colNam == "")
colNam = "F" + cnt;
int dspIdx = -1;
if (clkDgvC == null)
dspIdx = cnt;
else
{
dspIdx = clkDgvC.DisplayIndex;
if (insRit)
dspIdx++;
}
#endregion
#region
object obj = dgv.DataSource;
if (obj == null)
{
#region
if (insCelTyp == null)
insCelTyp = Col.ETyp.cTxt;
DataGridViewColumn dgvC = new DataGridViewColumn(insCelTyp);
dgvC.SortMode = DataGridViewColumnSortMode.Automatic;
dgvC.HeaderText = colNam;
dgv.Columns.Add(dgvC);
dgvC.DisplayIndex = dspIdx;
#endregion
}
else
{
#region
string typ = obj.GetType().Name;
if (typ == EDat.DataTable + "")
{
#region
#region 操作 DataTable 对象
DataGridViewColumn dgvC;
#region 以下包含代码可能有别的解决方法,此不临时替代
#region 记录加列前的列的 显序
int[] dspIdxS = new int[cnt];
for (int i = 0; i < cnt - 1; i++)
{
dgvC = dgv.Columns[i];
dspIdxS[i] = dgvC.DisplayIndex;
}
#endregion
#region 注:以上代码可能会自动打乱原列 显序
DataTable dt = obj as DataTable;
DT.Col.Add(dt, colNam);
#endregion
#region 还原加列前的列的 显序
for (int i = 0; i < cnt - 1; i++)
{
dgvC = dgv.Columns[i];
dgvC.DisplayIndex = dspIdxS[i];
}
#endregion
#endregion
#endregion
if (clkDgvC != null)
{
#region
cnt--;
dgvC = dgv.Columns[cnt];
dgvC.SortMode = DataGridViewColumnSortMode.Automatic;
dgvC.DisplayIndex = dspIdx;
#endregion
}
#endregion
}
#endregion
}
#endregion
#endregion
}
/// <summary>
/// [综合情况] 左插列
/// </summary>
/// <param name="dgv"></param>
/// <param name="insCelTyp"></param>
/// <param name="colNam"></param>
/// <param name="e"></param>
public static void Ins(DataGridView dgv, DataGridViewCell insCelTyp, string colNam, DataGridViewCellMouseEventArgs e)
{
New(dgv, insCelTyp, colNam, false, ref e);
}
/// <summary>
/// [综合情况] 右插列
/// </summary>
/// <param name="dgv"></param>
/// <param name="insCelTyp"></param>
/// <param name="colNam"></param>
/// <param name="e"></param>
public static void Ins_(DataGridView dgv, DataGridViewCell insCelTyp, string colNam, DataGridViewCellMouseEventArgs e)
{
New(dgv, insCelTyp, colNam, true, ref e);
}
/// <summary>
/// [综合情况] 新增列
/// </summary>
/// <param name="dgv"></param>
/// <param name="colNam"></param>
/// <param name="insRit"></param>
/// <param name="e"></param>
public static void New(DataGridView dgv, string colNam, bool insRit,ref DataGridViewCellMouseEventArgs e)
{
DataGridViewCell insCelTyp = Col.ETyp.cTxt;
New(dgv, insCelTyp, colNam, insRit, ref e);
}
/// <summary>
/// [综合情况] 左插列
/// </summary>
/// <param name="dgv"></param>
/// <param name="colNam"></param>
/// <param name="insRit"></param>
/// <param name="e"></param>
public static void Ins(DataGridView dgv, string colNam, bool insRit, DataGridViewCellMouseEventArgs e)
{
New(dgv, colNam, false,ref e);
}
/// <summary>
/// [综合情况] 右插列
/// </summary>
/// <param name="dgv"></param>
/// <param name="colNam"></param>
/// <param name="insRit"></param>
/// <param name="e"></param>
public static void Ins_(DataGridView dgv, string colNam, bool insRit, DataGridViewCellMouseEventArgs e)
{
New(dgv, colNam, true, ref e);
}
#endregion
#region [综合情况] 删除列
/// <summary>
/// [综合情况] 删除列
/// </summary>
/// <param name="dgv"></param>
/// <param name="e"></param>
public static void Del(DataGridView dgv, DataGridViewCellMouseEventArgs e)
{
#region
DataGridViewColumn clkDgvC = null;
ClkDgvC(dgv, e, out clkDgvC);
if (clkDgvC == null)
return;
object obj = dgv.DataSource;
if (obj == null)
dgv.Columns.Remove(clkDgvC);
else
{
string typ = obj.GetType().Name;
if (typ == EDat.DataTable + "")
{
int colIdx = clkDgvC.Index;
DataTable dt = obj as DataTable;
dt.Columns.RemoveAt(colIdx);
}
}
#endregion
}
#endregion
#endregion
}
/// <summary>
/// [综合情况] 综合处理
/// 时间: 2021/07/02 23:45:58
/// </summary>
public static class Row2
{
#region
#region [综合情况] 新增行
/// <summary>
/// [综合情况] 新增行
/// </summary>
/// <param name="dgv"></param>
/// <param name="insDwn"></param>
/// <param name="e"></param>
public static void New(DataGridView dgv, bool insDwn, ref DataGridViewCellMouseEventArgs e)
{
#region
#region
DataGridViewColumn clkDgvC;
DataGridViewRow clkDgvR;
DataGridViewCell clkDgvc;
_CellMouseDown(dgv, e, out clkDgvC, out clkDgvR, out clkDgvc);
#endregion
#region
int row = dgv.Rows.Count;
bool bol = dgv.AllowUserToAddRows;
if (bol)
row--;
int insIdx = -1;
if (clkDgvR == null)
insIdx = row;// --row;
else
{
insIdx = clkDgvR.Index;
if (insDwn)
insIdx++;
else
{
#region 此码作用于 能在 点击行处 连续 添加
MouseEventArgs mse = new MouseEventArgs(MouseButtons.Left, 1, 1, 1, 0);
e = new DataGridViewCellMouseEventArgs(e.ColumnIndex, insIdx + 1, e.Location.X, e.Location.Y, mse);
#endregion
}
}
#endregion
#region
object obj = dgv.DataSource;
if (obj == null)
{
#region
if (insIdx < row)
dgv.Rows.Insert(insIdx, 1);
else
dgv.Rows.Add();
#endregion
}
else
{
#region
string typ = obj.GetType().Name;
if (typ == EDat.DataTable + "")
{
#region
DataTable dt = obj as DataTable;
if (insIdx < row)
{
DataRow dr = dt.NewRow();
dt.Rows.InsertAt(dr, insIdx);
}
else
dt.Rows.Add();
#endregion
}
#endregion
}
#endregion
#endregion
}
/// <summary>
/// [综合情况] 在当前行处插入新行
/// </summary>
/// <param name="dgv"></param>
/// <param name="e"></param>
public static void Ins(DataGridView dgv, ref DataGridViewCellMouseEventArgs e)
{
New(dgv, false,ref e);
}
/// <summary>
/// [综合情况] 在当前行下面插入新行
/// </summary>
/// <param name="dgv"></param>
/// <param name="e"></param>
public static void Ins_(DataGridView dgv,ref DataGridViewCellMouseEventArgs e)
{
New(dgv, true,ref e);
}
#endregion
#region [综合情况] 删除行
public static void Del(DataGridView dgv,ref DataGridViewCellMouseEventArgs e)
{
#region
#region
DataGridViewColumn clkDgvC;
DataGridViewRow clkDgvR;
DataGridViewCell clkDgvc;
_CellMouseDown(dgv, e, out clkDgvC, out clkDgvR, out clkDgvc);
if (clkDgvR == null)
return;
#endregion
#region
int rowIdx = clkDgvR.Index;
bool bol = dgv.AllowUserToAddRows;
int cnt = dgv.Rows.Count;
if (bol)
{
cnt--;
if (rowIdx == cnt)
return;
}
#endregion
#region
object obj = dgv.DataSource;
if (obj == null)
dgv.Rows.RemoveAt(rowIdx);
else
{
#region
string typ = obj.GetType().Name;
if (typ == EDat.DataTable + "")
{
DataTable dt = obj as DataTable;
dt.Rows.RemoveAt(rowIdx);
}
#endregion
}
cnt--;
if (cnt < 1)
{
MouseEventArgs mse = new MouseEventArgs(MouseButtons.Left, 1, 1, 1, 0);
e = new DataGridViewCellMouseEventArgs(e.ColumnIndex, -1, e.Location.X, e.Location.Y, mse);
}
#endregion
#endregion
}
#endregion
#region [综合情况] 删除所有空行
/// <summary>
/// [综合情况] 删除所有空行
/// </summary>
/// <param name="dgv"></param>
public static void Trm(DataGridView dgv)
{
#region
int row = dgv.Rows.Count;
if (dgv.AllowUserToAddRows)
row--;
if (row < 1)
return;
row--;
int j;
int col = dgv.Columns.Count;
#endregion
#region
string vlu;
object obj = dgv.DataSource;
if(obj==null)
{
#region
DataGridViewRow dgvR;
DataGridViewCell dgvc;
for (int i = row; i > -1; i--)
{
dgvR = dgv.Rows[i];
for (j = 0; j < col; j++)
{
dgvc = dgvR.Cells[j];
vlu = dgvc.Value.ToString();
if (vlu != "")// dgvc.Value != null)
break;
}
if (j < col)
continue;
dgvR = null;
dgv.Rows.RemoveAt(i);
}
#endregion
}
else
{
string typ = obj.GetType().Name;
if(typ==EDat.DataTable+"")
{
#region
DataTable dt = obj as DataTable;
DataRow dr;
for (int i = row; i > -1; i--)
{
dr = dt.Rows[i];
for (j = 0; j < col; j++)
{
vlu = dr[j] + "";
if (vlu != "")
break;
}
if (j < col)
continue;
dr = null;
dt.Rows.RemoveAt(i);
}
#endregion
}
}
#endregion
}
#endregion
#region [综合情况] 清空所有行
/// <summary>
/// [综合情况] 清空所有行
/// </summary>
/// <param name="dgv"></param>
public static void Clr(DataGridView dgv)
{
#region
int row = dgv.Rows.Count;
if (dgv.AllowUserToAddRows)
row--;
if (row < 1)
return;
row--;
#endregion
#region
object obj = dgv.DataSource;
if (obj == null)
dgv.Rows.Clear();
else
{
string typ = obj.GetType().Name;
if (typ == EDat.DataTable + "")
{
#region
DataTable dt = obj as DataTable;
dt.Rows.Clear();
#endregion
}
}
#endregion
}
#endregion
#region [综合情况] 清空所有数据
/// <summary>
/// [综合情况] 清空所有数据
/// </summary>
/// <param name="dgv"></param>
public static void Nul(DataGridView dgv)
{
#region
int row = dgv.Rows.Count;
if (dgv.AllowUserToAddRows)
row--;
if (row < 1)
return;
row--;
int j;
int col = dgv.Columns.Count;
#endregion
#region
object obj = dgv.DataSource;
if (obj == null)
{
#region
DataGridViewRow dgvR;
DataGridViewCell dgvc;
for (int i = row; i > -1; i--)
{
dgvR = dgv.Rows[i];
for (j = 0; j < col; j++)
{
dgvc = dgvR.Cells[j];
if (dgvc.Value == null)
continue;
dgvc.Value = "";
}
}
#endregion
}
else
{
string typ = obj.GetType().Name;
if (typ == EDat.DataTable + "")
{
#region
DataTable dt = obj as DataTable;
DataRow dr;
for (int i = row; i > -1; i--)
{
dr = dt.Rows[i];
for (j = 0; j < col; j++)
{
obj = dr[j];
if (obj == null)
continue;
dr[j] = "";
}
}
#endregion
}
}
#endregion
}
#endregion
#endregion
}
}
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