DatagridviewDisplayedBandsData.cs source code in C# .NET

                        Code:
                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / WinForms / Managed / System / WinForms / DatagridviewDisplayedBandsData.cs / 1 / DatagridviewDisplayedBandsData.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Windows.Forms 
{ 
    public partial class DataGridView
    { 
        internal class DisplayedBandsData
        {
            private bool dirty;
 
            private int firstDisplayedFrozenRow;
            private int firstDisplayedFrozenCol; 
            private int numDisplayedFrozenRows; 
            private int numDisplayedFrozenCols;
            private int numTotallyDisplayedFrozenRows; 
            private int firstDisplayedScrollingRow;
            private int numDisplayedScrollingRows;
            private int numTotallyDisplayedScrollingRows;
            private int firstDisplayedScrollingCol; 
            private int numDisplayedScrollingCols;
            private int lastTotallyDisplayedScrollingCol; 
            private int lastDisplayedScrollingRow; 
            private int lastDisplayedFrozenCol;
            private int lastDisplayedFrozenRow; 
            private int oldFirstDisplayedScrollingRow;
            private int oldFirstDisplayedScrollingCol;
            private int oldNumDisplayedFrozenRows;
            private int oldNumDisplayedScrollingRows; 

            private bool rowInsertionOccurred, columnInsertionOccurred; 
 
            public DisplayedBandsData()
            { 
                this.firstDisplayedFrozenRow = -1;
                this.firstDisplayedFrozenCol = -1;
                this.firstDisplayedScrollingRow = -1;
                this.firstDisplayedScrollingCol = -1; 
                this.lastTotallyDisplayedScrollingCol = -1;
                this.lastDisplayedScrollingRow = -1; 
                this.lastDisplayedFrozenCol = -1; 
                this.lastDisplayedFrozenRow = -1;
                this.oldFirstDisplayedScrollingRow = -1; 
                this.oldFirstDisplayedScrollingCol = -1;
            }

            public bool ColumnInsertionOccurred 
            {
                get 
                { 
                    return this.columnInsertionOccurred;
                } 
            }

            public bool Dirty
            { 
                get
                { 
                    return this.dirty; 
                }
                set 
                {
                    this.dirty = value;
                }
            } 

            public int FirstDisplayedFrozenCol 
            { 
                set
                { 
                    if (value != this.firstDisplayedFrozenCol)
                    {
                        EnsureDirtyState();
                        this.firstDisplayedFrozenCol = value; 
                    }
                } 
            } 

            public int FirstDisplayedFrozenRow 
            {
                set
                {
                    if (value != this.firstDisplayedFrozenRow) 
                    {
                        EnsureDirtyState(); 
                        this.firstDisplayedFrozenRow = value; 
                    }
                } 
            }

            public int FirstDisplayedScrollingCol
            { 
                get
                { 
                    return this.firstDisplayedScrollingCol; 
                }
                set 
                {
                    if (value != this.firstDisplayedScrollingCol)
                    {
                        EnsureDirtyState(); 
                        this.firstDisplayedScrollingCol = value;
                    } 
                } 
            }
 
            public int FirstDisplayedScrollingRow
            {
                get
                { 
                    return this.firstDisplayedScrollingRow;
                } 
                set 
                {
                    if (value != this.firstDisplayedScrollingRow) 
                    {
                        EnsureDirtyState();
                        this.firstDisplayedScrollingRow = value;
                    } 
                }
            } 
 
            public int LastDisplayedFrozenCol
            { 
                set
                {
                    if (value != this.lastDisplayedFrozenCol)
                    { 
                        EnsureDirtyState();
                        this.lastDisplayedFrozenCol = value; 
                    } 
                }
            } 

            public int LastDisplayedFrozenRow
            {
                set 
                {
                    if (value != this.lastDisplayedFrozenRow) 
                    { 
                        EnsureDirtyState();
                        this.lastDisplayedFrozenRow = value; 
                    }
                }
            }
 
            public int LastDisplayedScrollingRow
            { 
                set 
                {
                    if (value != this.lastDisplayedScrollingRow) 
                    {
                        EnsureDirtyState();
                        this.lastDisplayedScrollingRow = value;
                    } 
                }
            } 
 
            public int LastTotallyDisplayedScrollingCol
            { 
                get
                {
                    return this.lastTotallyDisplayedScrollingCol;
                } 
                set
                { 
                    if (value != this.lastTotallyDisplayedScrollingCol) 
                    {
                        EnsureDirtyState(); 
                        this.lastTotallyDisplayedScrollingCol = value;
                    }
                }
            } 

            public int NumDisplayedFrozenCols 
            { 
                get
                { 
                    return this.numDisplayedFrozenCols;
                }
                set
                { 
                    if (value != this.numDisplayedFrozenCols)
                    { 
                        EnsureDirtyState(); 
                        this.numDisplayedFrozenCols = value;
                    } 
                }
            }

            public int NumDisplayedFrozenRows 
            {
                get 
                { 
                    return this.numDisplayedFrozenRows;
                } 
                set
                {
                    if (value != this.numDisplayedFrozenRows)
                    { 
                        EnsureDirtyState();
                        this.numDisplayedFrozenRows = value; 
                    } 
                }
            } 

            public int NumDisplayedScrollingRows
            {
                get 
                {
                    return this.numDisplayedScrollingRows; 
                } 
                set
                { 
                    if (value != this.numDisplayedScrollingRows)
                    {
                        EnsureDirtyState();
                        this.numDisplayedScrollingRows = value; 
                    }
                } 
            } 

            public int NumDisplayedScrollingCols 
            {
                get
                {
                    return this.numDisplayedScrollingCols; 
                }
                set 
                { 
                    if (value != this.numDisplayedScrollingCols)
                    { 
                        EnsureDirtyState();
                        this.numDisplayedScrollingCols = value;
                    }
                } 
            }
 
            public int NumTotallyDisplayedFrozenRows 
            {
                get 
                {
                    return this.numTotallyDisplayedFrozenRows;
                }
                set 
                {
                    if (value != this.numTotallyDisplayedFrozenRows) 
                    { 
                        EnsureDirtyState();
                        this.numTotallyDisplayedFrozenRows = value; 
                    }
                }
            }
 
            public int NumTotallyDisplayedScrollingRows
            { 
                get 
                {
                    return this.numTotallyDisplayedScrollingRows; 
                }
                set
                {
                    if (value != this.numTotallyDisplayedScrollingRows) 
                    {
                        EnsureDirtyState(); 
                        this.numTotallyDisplayedScrollingRows = value; 
                    }
                } 
            }

            public int OldFirstDisplayedScrollingCol
            { 
                get
                { 
                    return this.oldFirstDisplayedScrollingCol; 
                }
            } 

            public int OldFirstDisplayedScrollingRow
            {
                get 
                {
                    return this.oldFirstDisplayedScrollingRow; 
                } 
            }
 
            public int OldNumDisplayedFrozenRows
            {
                get
                { 
                    return this.oldNumDisplayedFrozenRows;
                } 
            } 

            public int OldNumDisplayedScrollingRows 
            {
                get
                {
                    return this.oldNumDisplayedScrollingRows; 
                }
            } 
 
            public bool RowInsertionOccurred
            { 
                get
                {
                    return this.rowInsertionOccurred;
                } 
            }
 
            public void EnsureDirtyState() 
            {
                if (!this.dirty) 
                {
                    this.dirty = true;
                    this.rowInsertionOccurred = false;
                    this.columnInsertionOccurred = false; 
                    SetOldValues();
                } 
            } 

            public void CorrectColumnIndexAfterInsertion(int columnIndex, int insertionCount) 
            {
                EnsureDirtyState();
                if (this.oldFirstDisplayedScrollingCol != -1 && columnIndex <= this.oldFirstDisplayedScrollingCol)
                { 
                    this.oldFirstDisplayedScrollingCol += insertionCount;
                } 
                this.columnInsertionOccurred = true; 
            }
 
            public void CorrectRowIndexAfterDeletion(int rowIndex)
            {
                EnsureDirtyState();
                if (this.oldFirstDisplayedScrollingRow != -1 && rowIndex <= this.oldFirstDisplayedScrollingRow) 
                {
                    this.oldFirstDisplayedScrollingRow--; 
                } 
            }
 
            public void CorrectRowIndexAfterInsertion(int rowIndex, int insertionCount)
            {
                EnsureDirtyState();
                if (this.oldFirstDisplayedScrollingRow != -1 && rowIndex <= this.oldFirstDisplayedScrollingRow) 
                {
                    this.oldFirstDisplayedScrollingRow += insertionCount; 
                } 
                this.rowInsertionOccurred = true;
                this.oldNumDisplayedScrollingRows += insertionCount; 
                this.oldNumDisplayedFrozenRows += insertionCount;
            }

            private void SetOldValues() 
            {
                this.oldFirstDisplayedScrollingRow = this.firstDisplayedScrollingRow; 
                this.oldFirstDisplayedScrollingCol = this.firstDisplayedScrollingCol; 
                this.oldNumDisplayedFrozenRows = this.numDisplayedFrozenRows;
                this.oldNumDisplayedScrollingRows = this.numDisplayedScrollingRows; 
            }
        }
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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DatagridviewDisplayedBandsData.cs source code in C# .NET

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