(WinForm下)DataGrid中加入了一个ComboBox下拉列后,默认的绑定值不显示了,怎么才能不用点击可以直接显示出文本? 如上题目 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 没人Gz,只好用自已的笨办法了.for (int i=0;i<dt.Rows.Count;i++){ dg_ProductList[i,1] = dt.Rows[i]["Wlmc"];}不过还是希望有朋友给出好的解决方法. 楼主怎么在datagrid里加控件?我现在需要选定框,然后实现可以多选删除数据。多谢! 我也是参考从网上下载的,可以给你参考一下:using System;using System.Drawing;using System.Collections;using System.ComponentModel;using System.Windows.Forms;using System.Data;namespace HBS{ public class Form3 : System.Windows.Forms.Form { private System.Windows.Forms.DataGrid dgdFunctionArea; private DataTable dtblFunctionalArea; private System.Windows.Forms.Button buttonFocus; private System.ComponentModel.Container components = null; public Form3() { InitializeComponent(); PopulateGrid(); } protected override void Dispose( bool disposing ) { if( disposing ) { if (components != null) { components.Dispose(); } } base.Dispose( disposing ); } #region Windows 窗体设计器生成的代码 private void InitializeComponent() { this.dgdFunctionArea = new System.Windows.Forms.DataGrid(); this.buttonFocus = new System.Windows.Forms.Button(); ((System.ComponentModel.ISupportInitialize)(this.dgdFunctionArea)).BeginInit(); this.SuspendLayout(); // // dgdFunctionArea // this.dgdFunctionArea.DataMember = ""; this.dgdFunctionArea.HeaderForeColor = System.Drawing.SystemColors.ControlText; this.dgdFunctionArea.Location = new System.Drawing.Point(3, 7); this.dgdFunctionArea.Name = "dgdFunctionArea"; this.dgdFunctionArea.Size = new System.Drawing.Size(264, 156); this.dgdFunctionArea.TabIndex = 0; // // buttonFocus // this.buttonFocus.Location = new System.Drawing.Point(193, 175); this.buttonFocus.Name = "buttonFocus"; this.buttonFocus.Size = new System.Drawing.Size(70, 21); this.buttonFocus.TabIndex = 1; this.buttonFocus.Text = "获取焦点"; this.buttonFocus.Click += new System.EventHandler(this.buttonFocus_Click); // // Form3 // this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(276, 201); this.Controls.Add(this.buttonFocus); this.Controls.Add(this.dgdFunctionArea); this.Name = "Form3"; this.Text = "Form1"; this.Load += new System.EventHandler(this.Form3_Load); ((System.ComponentModel.ISupportInitialize)(this.dgdFunctionArea)).EndInit(); this.ResumeLayout(false); } #endregion //初始化DataGrid private void PopulateGrid() { //创建一个DataTable对象,包括四列,前三列为String,最后一列为Boolean。 dtblFunctionalArea = new DataTable ("FunctionArea"); string[] arrstrFunctionalArea = new string [3]{"Functional Area","Min","Max"}; DataColumn dtCol = null; //创建String列 for(int i=0; i< 3;i++) { dtCol = new DataColumn(arrstrFunctionalArea[i]); dtCol.DataType = Type.GetType("System.String"); dtCol.DefaultValue = ""; dtblFunctionalArea.Columns.Add(dtCol); } //创建Boolean列,用CheckedBox来显示。 DataColumn dtcCheck = new DataColumn("IsMandatory"); dtcCheck.DataType = System.Type.GetType("System.Boolean"); dtcCheck.DefaultValue = false; dtblFunctionalArea.Columns.Add(dtcCheck); //把表绑定到DataGrid dgdFunctionArea.DataSource = dtblFunctionalArea; //为DataGrid加载DataGridTableStyle样式 if(!dgdFunctionArea.TableStyles.Contains("FunctionArea")) { DataGridTableStyle dgdtblStyle = new DataGridTableStyle(); dgdtblStyle.MappingName = dtblFunctionalArea.TableName; dgdFunctionArea.TableStyles.Add(dgdtblStyle); dgdtblStyle.RowHeadersVisible = false; dgdtblStyle.HeaderBackColor = Color.LightSteelBlue; dgdtblStyle.AllowSorting = false; dgdtblStyle.HeaderBackColor = Color.FromArgb(8,36,107); dgdtblStyle.RowHeadersVisible = false; dgdtblStyle.HeaderForeColor = Color.White; dgdtblStyle.HeaderFont = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0))); dgdtblStyle.GridLineColor = Color.DarkGray; dgdtblStyle.PreferredRowHeight = 22; dgdFunctionArea.BackgroundColor = Color.White; //设置列的宽度 GridColumnStylesCollection colStyle = dgdFunctionArea.TableStyles[0].GridColumnStyles; colStyle[0].Width = 100; colStyle[1].Width = 50; colStyle[2].Width = 50; colStyle[3].Width = 80; } DataGridTextBoxColumn dgtb = (DataGridTextBoxColumn)dgdFunctionArea.TableStyles[0].GridColumnStyles[0]; ComboBox cmbFunctionArea = new ComboBox(); cmbFunctionArea.Items.AddRange(new object[]{"选项一","选项二","选项三"}); cmbFunctionArea.Cursor = Cursors.Arrow; cmbFunctionArea.DropDownStyle= ComboBoxStyle.DropDownList; cmbFunctionArea.Dock = DockStyle.Fill; //在选定项发生更改并且提交了该更改后发生 cmbFunctionArea.SelectionChangeCommitted += new EventHandler(cmbFunctionArea_SelectionChangeCommitted); //把ComboBox添加到DataGridTableStyle的第一列 dgtb.TextBox.Controls.Add(cmbFunctionArea); } //设置焦点模拟 private void GetFocus(int row,int col) { //先把焦点移动到DataGrid this.dgdFunctionArea.Focus(); //把焦点移动到DataGridCell DataGridCell dgc = new DataGridCell(row,col); this.dgdFunctionArea.CurrentCell = dgc; DataGridTextBoxColumn dgtb = (DataGridTextBoxColumn)dgdFunctionArea.TableStyles[0].GridColumnStyles[col]; //设置焦点 dgtb.TextBox.Focus(); } //把Combobox上修改的数据提交到当前的网格 private void cmbFunctionArea_SelectionChangeCommitted(object sender, EventArgs e) { MessageBox.Show("OK"); this.dgdFunctionArea[this.dgdFunctionArea.CurrentCell] = ((ComboBox)sender).SelectedItem.ToString(); } //设置新的焦点 private void buttonFocus_Click(object sender, System.EventArgs e) { //焦点模拟,这里设置第三行第一列 GetFocus(2,0); } private void Form3_Load(object sender, System.EventArgs e) { } }} 谁能通俗的解释一下.net里面的“强名称” gridview中checkbox不可选 什么样的代码是托管代码,什么样的是非托管的? 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{
dg_ProductList[i,1] = dt.Rows[i]["Wlmc"];
}
不过还是希望有朋友给出好的解决方法.
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;namespace HBS{ public class Form3 : System.Windows.Forms.Form
{
private System.Windows.Forms.DataGrid dgdFunctionArea;
private DataTable dtblFunctionalArea;
private System.Windows.Forms.Button buttonFocus;
private System.ComponentModel.Container components = null; public Form3()
{
InitializeComponent();
PopulateGrid();
} protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
} #region Windows 窗体设计器生成的代码
private void InitializeComponent()
{
this.dgdFunctionArea = new System.Windows.Forms.DataGrid();
this.buttonFocus = new System.Windows.Forms.Button();
((System.ComponentModel.ISupportInitialize)(this.dgdFunctionArea)).BeginInit();
this.SuspendLayout();
//
// dgdFunctionArea
//
this.dgdFunctionArea.DataMember = "";
this.dgdFunctionArea.HeaderForeColor = System.Drawing.SystemColors.ControlText;
this.dgdFunctionArea.Location = new System.Drawing.Point(3, 7);
this.dgdFunctionArea.Name = "dgdFunctionArea";
this.dgdFunctionArea.Size = new System.Drawing.Size(264, 156);
this.dgdFunctionArea.TabIndex = 0;
//
// buttonFocus
//
this.buttonFocus.Location = new System.Drawing.Point(193, 175);
this.buttonFocus.Name = "buttonFocus";
this.buttonFocus.Size = new System.Drawing.Size(70, 21);
this.buttonFocus.TabIndex = 1;
this.buttonFocus.Text = "获取焦点";
this.buttonFocus.Click += new System.EventHandler(this.buttonFocus_Click);
//
// Form3
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(276, 201);
this.Controls.Add(this.buttonFocus);
this.Controls.Add(this.dgdFunctionArea);
this.Name = "Form3";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form3_Load);
((System.ComponentModel.ISupportInitialize)(this.dgdFunctionArea)).EndInit();
this.ResumeLayout(false); }
#endregion
//初始化DataGrid
private void PopulateGrid()
{
//创建一个DataTable对象,包括四列,前三列为String,最后一列为Boolean。
dtblFunctionalArea = new DataTable ("FunctionArea");
string[] arrstrFunctionalArea = new string [3]{"Functional Area","Min","Max"};
DataColumn dtCol = null;
//创建String列
for(int i=0; i< 3;i++)
{
dtCol = new DataColumn(arrstrFunctionalArea[i]);
dtCol.DataType = Type.GetType("System.String");
dtCol.DefaultValue = "";
dtblFunctionalArea.Columns.Add(dtCol);
} //创建Boolean列,用CheckedBox来显示。
DataColumn dtcCheck = new DataColumn("IsMandatory");
dtcCheck.DataType = System.Type.GetType("System.Boolean");
dtcCheck.DefaultValue = false;
dtblFunctionalArea.Columns.Add(dtcCheck);
//把表绑定到DataGrid
dgdFunctionArea.DataSource = dtblFunctionalArea; //为DataGrid加载DataGridTableStyle样式
if(!dgdFunctionArea.TableStyles.Contains("FunctionArea"))
{
DataGridTableStyle dgdtblStyle = new DataGridTableStyle();
dgdtblStyle.MappingName = dtblFunctionalArea.TableName;
dgdFunctionArea.TableStyles.Add(dgdtblStyle);
dgdtblStyle.RowHeadersVisible = false;
dgdtblStyle.HeaderBackColor = Color.LightSteelBlue;
dgdtblStyle.AllowSorting = false;
dgdtblStyle.HeaderBackColor = Color.FromArgb(8,36,107);
dgdtblStyle.RowHeadersVisible = false;
dgdtblStyle.HeaderForeColor = Color.White;
dgdtblStyle.HeaderFont = new System.Drawing.Font("Microsoft Sans Serif", 9F,
System.Drawing.FontStyle.Bold,
System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
dgdtblStyle.GridLineColor = Color.DarkGray;
dgdtblStyle.PreferredRowHeight = 22;
dgdFunctionArea.BackgroundColor = Color.White; //设置列的宽度
GridColumnStylesCollection colStyle = dgdFunctionArea.TableStyles[0].GridColumnStyles;
colStyle[0].Width = 100;
colStyle[1].Width = 50;
colStyle[2].Width = 50;
colStyle[3].Width = 80;
} DataGridTextBoxColumn dgtb = (DataGridTextBoxColumn)dgdFunctionArea.TableStyles[0].GridColumnStyles[0];
ComboBox cmbFunctionArea = new ComboBox();
cmbFunctionArea.Items.AddRange(new object[]{"选项一","选项二","选项三"});
cmbFunctionArea.Cursor = Cursors.Arrow;
cmbFunctionArea.DropDownStyle= ComboBoxStyle.DropDownList;
cmbFunctionArea.Dock = DockStyle.Fill;
//在选定项发生更改并且提交了该更改后发生
cmbFunctionArea.SelectionChangeCommitted += new EventHandler(cmbFunctionArea_SelectionChangeCommitted);
//把ComboBox添加到DataGridTableStyle的第一列
dgtb.TextBox.Controls.Add(cmbFunctionArea);
} //设置焦点模拟
private void GetFocus(int row,int col)
{
//先把焦点移动到DataGrid
this.dgdFunctionArea.Focus();
//把焦点移动到DataGridCell
DataGridCell dgc = new DataGridCell(row,col);
this.dgdFunctionArea.CurrentCell = dgc;
DataGridTextBoxColumn dgtb = (DataGridTextBoxColumn)dgdFunctionArea.TableStyles[0].GridColumnStyles[col];
//设置焦点
dgtb.TextBox.Focus();
} //把Combobox上修改的数据提交到当前的网格
private void cmbFunctionArea_SelectionChangeCommitted(object sender, EventArgs e)
{
MessageBox.Show("OK");
this.dgdFunctionArea[this.dgdFunctionArea.CurrentCell] = ((ComboBox)sender).SelectedItem.ToString();
}
//设置新的焦点
private void buttonFocus_Click(object sender, System.EventArgs e)
{
//焦点模拟,这里设置第三行第一列
GetFocus(2,0);
} private void Form3_Load(object sender, System.EventArgs e)
{
}
}
}